Laredo's new lady doctor is Captain Parmalee's sister-in-law, widow of his brother Frank who died in the Civil War. Reese, Chad, Joe and Erik are sent after outlaw Bart Cutler. They soon learn that Cutler is actually Frank Parmalee and, although they try to keep the Captain from finding out, developments eventually lead to a showdown between the Parmalee brothers.

Reese's friend Cletus Grogan comes to town and Reese gets him to join the Rangers to convince him he isn't a jinx. Cletus is sent along with Reese, Chad and Joe to track down Linda Little Trees and her gang. Cletus ends up dislocating Chad's shoulder. The first town they arrive in has just had it's bank robbed by the Little Trees Gang. Chad sees a doctor for his shoulder while Joe immediately follows the outlaws trail before a rainstorm can wipe out the tracks. After the rain stops Joe takes off his wet shirt and is spotted by Linda Little Trees who is smitten with him. He is jumped by her gang and fights them off until Linda hits him on the head with a rock. Linda proposes to a tied-up Joe while Blue Dog, who wants Little Trees, threatens to kill him. Reese, Chad and Joe find the hideout and capture everyone but Linda Little Trees. Reese tricks Cletus into fighting by pretending to be wounded. Cletus overcomes is jinx fear, resigns from the Rangers and heads home to marry hi

Joe's old friend John Bright Star is accused of killing Clara McDermott, a woman who had befriended him. Joe and Cotton are picked for jury duty and Judge Lamprey is presiding, his family was killed by Apaches. After a quick trial Joe is the lone not guilty vote but is soon joined by Cotton and muleskinner Abbie Heffernan who has ideas about marrying Cotton. While the jury deliberates Parmalee sends Chad to look for evidence that will corroborate Bright Star's alibi. Parmalee, Eric and the Judge fend off a lynch mob and Parmalee concocts a re-enactment of the crime he hopes will catch the real killer.

Captain Parmalee receives an invitation to the reading of Jake Ringo's will, a man he arrested who has been hanged. Parmalee will be the only law officer amongst a who's who of criminals that includes Linda Littletrees. Chad and Joe, who Linda has feelings for, are to accompany Parmalee but Chad convinces Erik that Linda is like Pocahontas and he takes Joe's place. The meeting place is the Halfway Mansion which has the America-Mexico Border line running right down the middle of the house. The will states that the money gets split evenly among everyone, as long as they are alive. Since this is a group that already hates each other Captain Parmalee, Chad and Eric have their hands full as they try to stay alive, arrest those they can and return the $75,000.

Red Gully and his gang of brothers attack camped Indians and kill everyone except young boy Black Wing. His uncle Flying Cloud also survives but Black Wing does not know as he has already left to trail his father's killers. Chad, Joe and Erik are sent to bring Reese back from an extended weeks vacation and to get the Gully Gang. Reese, who is partying with three saloon girls, asks what day it is, realizes he is late getting back and heads for Laredo. Reese stops on the way where he is ambushed by Black Wing who shoots him in the buttocks with an arrow. The two quarrel at first and then establish a caring relationship as Black Wing eventually asks Reese to be his dad. Chad, Joe and Erik telegram their situation to the Captain and spend their time waiting with the saloon girls. The three trail the Gully Gang, running across three mail order brides who had everything they owned stolen from them by the Gullys. Black Wing finds the Gully's camp and shoots an arrow into it. Reese ge

The four Rangers stake out and foil a bank robbery by the Emerson Gang, capturing leader Wayne Emerson and killing the rest except for Wayne's younger brother Ed. Reese's yearly enlistment with the Rangers is up and he intends on using his share of the reward money to buy some ranch land. He buys parcel 16 from the Fletchers and is excited until he discovers the land is under alkaline water! Eric sets out after the Fletchers, posing as a wealthy European who wants to buy land in Texas. Reese, Chad and Joe, with prisoner Wayne, in tow head for a rendezvous with Erik and the Fletchers in town. Reese wants to get his money back by force but Erik, Chad and Joe plan to get it back with finesse so they handcuff Reese to the bedpost in the hotel's bridal sweet along with Emerson. Later Chad and Joe decide Reese and Emerson would be safer in jail. They get Reese to sign his re-enlistment paper by telling him they will get the sheriff to let him out but keep it instead. Eric gets the Fl

Sean Finnegan is intent on starting organized crime in Texas. He recruits name outlaws wanted outside of Texas and teaches them methods and techniques in various rackets. A stage robbery planned by him goes awry when one man is killed and Oklahoma's fastest draw Tom Fox is identified as the gunman. Parmalee sends Reese and Chad to Dry Wells to scout around and they find Sheriff Gorman has ""disappeared"" and been replaced by one of Finnegan's men. They soon discover the entire town is under Finnegan's control. Reese and Tom Fox get into a gunfight and Reese things he outdrew Fox, although Finnegan actually shoots him from the saloon as Fox was now wanted in Texas and a risk. Erik and Joe infiltrate the gang as outlaws Zack Johnson and Cherokee Joe, two outlaws whose recent capture has not been publicized. Finnegan decides to do away with Reese by putting his feet in cement and rolling the wagon where they are hiding him into a lake. Erik and Joe devise a plan to rescue him. Erik

Chief Kicking Bear and his tribe do not want wagon trains camping in their valley and threaten to attack the one camped there now. Captain Parmalee, Reese, Chad and Joe arrive to help. After a meeting with Kicking Bear and war eager Many Horses Parmalee sends Chad to fetch the Indian Affairs Commissioner. He assigns Reese and Joe to ride to the Indians camp to negotiate, stall for time, until Chad gets back. Parmalee stays with the train to keep the hot-headed wagon master from starting something. While in camp Reese competes in several games and wins them, attracting the attention of the Chief's hefty, giggling daughter Lost Bird, who decides she wants to marry him. Many Horses wants to marry Lost Bird and challenges Reese to several matches. Reese pretends to be injured for the last two contests and Joe steps in, winning the knife throw and the horse race. Lost Bird decides she now wants Joe for her husband. Chad arrives with the Commissioner and peace terms are agreed to.

Reese gets the drop on outlaw Johnny Rhodes but his horse Cactus is spooked by a rattler and Reese is thrown and knocked unconscious. Rhodes' horse is lame so he takes Cactus. When Reese wakes up he has amnesia and because of the horse with Rhodes name on it he is mistaken for the outlaw. Chad and Joe have been sent to track Rhodes in the hopes it will keep him too busy to attack a gold shipment. They come upon Reese in San Rosa and observe him as ""Johnny Rhodes"". They approach him as his ""outlaw"" buddies, assuming he is undercover. After their conversation they get the true picture of Reese's condition. Reese has Mio, the cantina owner with eyes for Reese, help him tie up Chad and Joe after they've been slipped knockout pills. The real Rhodes appears with his gang. They take Reese, Chad and Joe prisoner and tie them up in the cantina. Mio cuts their ropes and helps them fight off and capture Rhodes and his gang.

A New Hampshire deputy constable named Clendon Macmillan comes to Laredo with 9 years of experience, intending to improve the quality of the average Ranger. He would like to apply his modern law enforcement techniques to what he refers to as "" the most primitive law enforcement organization in the country - the Texas Rangers."" He is sent out with Reese, Chad, and Joe to track Running Antelope and Linda Little Trees. Chad and Joe take a fiendish delight enjoying the fact that no man has ever rubbed Reese the wrong way as easily as MacMillan does. They arrive at a town just raided by Running Antelope and find Linda Little Trees in jail. While the rest are having steaks with the Marshall Little Trees talks MacMillan into releasing her, saying she will take him to their hideout. He is taken prisoner and rescued by Reese, Chad and Joe. Upon their return to Laredo Parmalee offers MacMillan the toughest Ranger assignment ever but MacMillan declines saying he's needed back in New Hampsh

Reese, Chad and Joe chase Durkee, a wanted man, into Captain Parmalee's office only to find out he is seeking amnesty in return for information about the Jamison Gang. The three of them are assigned to work with him and sent to Arillo. Meanwhile, Sam Burns is trying to force Annamay, a widow with two children, off her ranch so he and Jamison can get the silver bars the Gang buried in her barn's floor. The Rangers help Annamay and the children repair her wagon wheel and she takes a liking to Reese, who the children are soon calling ""Uncle Reese"". Annamay learns of the silver and switches it to a new hiding place. Jamison and Gang threaten Annamay and the children as the Rangers hurry to rescue them and recover the silver.

Midas Mantee is out of prison and back into his old career: stealing gold from banks. Reese unwittingly foils Erik Hunter's plan to go undercover and join Mantee's gang. So Erik stages a gunfight in front of one of Midas' men, ""killing"" Chad and escaping Joe. Parmalee joins them having heard of Chad's ""death"". Mantee's master plan for the Val Verde Bank involves a lady dentist, nitrous oxide and camels.

Captain Parmalee assigns Reese is to protect the rightful owner of the Willingham Ranch, which means evicting the Willinghams to make way for the railroad. The Willinghams are an eccentric but gracious and likable Southern family of artists who lost a son in the Civil War. Reese falls and ends up in bed with a sprained back. Parmalee sends Chad to check up on Reese. Chad arrives and sees two railroad surveyors pushing Mrs. Willingham around and promptly decks them. He and Reese agree to find a nice way of getting the Willinghams to leave. Joe is sent next and walks in on Reese, Chad and the Willinghams singing Swanee River. They discover that brother Alcott signed the bill of sale but had no ownership right to the property. All they have to do is find the waiver he signed stating so. Joe is persuaded to pose for a sculpture and after Erik arrives he's soon reading Shakespeare. The four rangers search for the waiver with the Willinghams as railroad toughs approach the ranch de

Chad sneaks into the barracks at night wearing only his underwear. Reese and Joe catch him and he explains he lost Billy Harker, the prisoner he was escorting. He gets a change of clothes, Reese's spare gun and a horse and heads back out. The next day Reese and Joe are sent out to catch the thief who stole the ranger horse, the only clue being Chad's muddy socks. They find Chad as he is wrestling with Laurie Martin, Harker's girl, a very convincing but deceptive young woman. She convinces Reese she was forced to help Harker out of fear and she leads him off to find Harker but knocks him out with a piece of wood instead. She is caught but tricks cattle drovers into thinking the rangers are outlaws and escapes during the ensuing fist fight and cattle stampede. Joe saw her escape but let her go saying if she thinks they aren't following she'll head right for Harker, which she does. The rangers track her to the outlaws hideout and capture or kill Harker and his gang in a shootout.

Reese, Chad and Joe capture the Slaughter Gang and take them to the nearest jail in San Sabo. They take the stolen money to the bank and meet Miss Emma there, who is a cultural lecturer selling tickets for her lectures on Greece with little luck. Chad and Joe trick Reese into helping her. He does so by employing saloon dancer Carlotta to warm up the crowd for Miss Emma's lecture. While Miss Emma is speaking a gang robs the bank and releases the Slaughters at the same time to throw suspicion on them. While pursuing the robbers Reese crosses paths with Miss Emma and discovers there may be more then meets the eye concerning the ""wealth"" of her wagonload of books.

Captain Parmalee sends Reese on a mission to pickup a special shipment and bring it back to Laredo. Reese brags about the mission before he leaves leading several people to believe it's the $100,000 in gold shipment that everyone's heard rumors about. After he picks up the shipment in a wagon Reese is challenged for it by the Baker Gang, Sheriff Wes Cottrell and his deputies, Ma Burns and her daughter Flame and an Old Timer, who just wants to see what $100,000 in gold looks like. Reese outwits them all until everyone but the Old Timer join forces, surround Reese and force him into a shoot-out. Meanwhile, Chad and Joe have been sent out to find out why Reese is two days late. They arrive during the gun battle and help Reese. The strongbox has been penetrated by bullets and the contents, 36 bottles of limestone Tennessee sippin' whiskey for Parmalee's private stock, is leaking out. Only 1 bottle is left for Reese to deliver to the Captain. Can he do it without breaking it?

Chad and Joe set Ranger Jess Moran up for a 4th of July boxing match with Calvary champion Percy Flower, the bet being a month's pay. The Pryor Gang is in the territory and Captain Parmalee is worried about them hitting the next silver mine shipment so he cancels the holiday for the rangers and assigns six of them to be on duty in town while he waits at the mine with the rest of the rangers. Chad, Joe and Jess are three of the six left in town. The Captain has agreed that one of them may leave guarding the silver bars if all of them agree it's necessary. Their problem will be getting straight-laced Ranger Gruber out of the way. Insurance man Wilson Jones helps them do this. Once Chad, Joe and Jess leave for the boxing match the Pryor Gang strikes and steals the silver. Jess twists his ankle just before the fight and Joe has to face Flower. Chad and Joe leave to chase the Pryors and capture them and recover the silver while Jess takes a swing at Flower and knocks him out.

Reese pretends to be a cattle buyer at Martha Tuforth's way station where outlaws Jack Hanks, Paco and Crazy John Holden are awaiting the arrival of Benny Murphy, who has their money to travel to Mexico with. Crazy John recognizes Reese as a ranger and they take him prisoner. Councilman Willburn and his wife Letty arrive shortly after and also find themselves hostages. Paco spends his time romancing Letty Willburn and Maryanne, Martha Tuforth's niece. Joe shows up disguised as a traveling salesman named Stanley. He is soon found out to be a ranger and joins Reese, tied to a chair. He tells Reese and the outlaws that Benny Murphy has been captured. Reese and Joe trick Crazy John into challenging Paco to draw and Paco kills him. Paco picks young Maryanne as the hostage to take with them along with the rangers when they leave. Martha breaks a glass and hands a broken piece to Joe who manages to cut through his ropes. A fist ensues and Reese and Joe capture the outlaws.

Reese's inventor friend Major John Cane is called upon to open a locked bank vault. Outlaw Ezekiel Fry sees him do it and tricks him into helping his gang rob the Porfirio Bank. Reese, Chad and Joe are sent to Porfirio to investigate the robbery. Realizing he's been deceived the Major refuses to help rob the Cattleman's Exchange until Fry and his gang kidnap Reese and threaten to harm him. Then Cane invents a precision plan that requires the outlaws to practice their parts in a barn. Chad and Joe follow a dog that has hung around them since they arrived in Porfirio, hoping it will lead them to Reese. Major Cane cuts Reese lose while the outlaws are practicing the robbery and the fight begins just as Chad, Joe and the dog arrive.

Jake Murdock wants revenge on Parmalee for sending him to prison. His plot involves Dr. Duvain who has a mind-controlling drug that can make a man kill his best friend. To remove suspicion they plan to have a ranger kill the captain. Reese is picked and undergoes a series of injections to prepare him for the murder. A $5 gold piece is the key to controlling Reese, whenever he sees one he is to obey the next verbal command which results in Reese allowing an outlaw to escape, immersing himself in a horse trough (Go soak your head) and busting up the saloon. Chad investigates the doctor's background and reads books about chemistry and the brain. He figures out what is causing Reese's strange behavior and convinces Parmalee of it who then devises a way for the plan to backfire on Murdock and the doctor.

Chad and Joe are sent to Guarded Wells to dispose of the Ramirez Gang. They do and a grateful town rewards them with food, drink and hotel rooms for free. Chad devises a way he and Joe can take advantage of this and wires the Captain that the Calico Kid is headed for town. Afterwords they learn that the real Calico Kid, a road agent 30 years earlier, is now Sam Lowell, an older man who has since become a model citizen. Not wanting to cause trouble for Sam, Chad and Joe work out a plan to put on a mock shoot-out during which the Calico Kid(Chad)is killed. Meanwhile, Sam's niece Lorrie sends a telegram to Parmalee asking for more men, stating they are doomed to destruction because of the Calico Kid's impending visit. Parmalee gets suspicious and rides to Guarded Wells with Reese. Town businessman Jacobus Carson, who originally hired Ramirez finds out about the Rangers Calico Kid plan and decides it would be a good time to rob the gold bullion from the bank. Chad and Joe stage the

Reese has a toothache and is sent to retrieve the overdue school teacher from the train station at Gutter's Gulch. While there Reese brags that he is there to pick up the most important man ever to come to Laredo, which is overheard by recently released convict Anson Jones, a man Reese helped put behind bars. Pringle comes walking into the station as he got off the train when it made a brief stop and was left behind. Pringle has never ridden a horse so Reese has to time him to his mount. Jones and his gang try to kidnap Pringle unsuccessfully. The next day Reese's tooth is worse and he decides to take a detour to Doc Severnson's but walks into the Jones Gang's hideout in doing so. The Doc treats Jones bullet wound, inflicted by Reese. Reese, Doc Severnson and Pringle overcome the bandits but Severnson cannot pull Reese's tooth as his arm was broken in the fight against the outlaws. During the fight Reese is hit in the cheek. When he returns with Pringle the toothache is gone a

Parmalee sends Chad and Joe after the Sam Dixie Gang, who Erik has been trailing for two weeks. Meanwhile, Reese is assigned to catch the thieves who stole merchandise from Morgan's Store. He tracks them down and is captured by the thieves, a group of four orphan boys lead by Dixie's teen cousin Matt who wants to join up with Sam Dixie's gang. Erik has been romancing Dixie's girl Mollie and while searching for the Dixie Gang runs into Reese and the orphans. Sam Dixie eventually meets up with the orphans but wants nothing to do with them. Reese managed to save the life of Midg the youngest of the boys and the orphans are determined to keep Sam Dixie from killing Reese. Is the Dixie Gang strong enough to do battle with two Texas Rangers and four orphan boys?

Reese is tricked into volunteering for stable duty by Chad and Joe, who are then sent out to escort a payroll wagon. They are distracted from the wagon by a runaway team and the payroll wagon is taken by a group of renegade French soldiers who want to return to the power and status they enjoyed under Maximilian. Reese is sent to the French camp as a spy by Parmalee. He does all right but is suspected and when he leads the French out after another payroll wagon Chad and Joe are caught sneaking into their camp by a reserve force. Parmalee and the Rangers guarding the second payroll wagon are taken back to the French camp with Reese, where it is decided Reese is to be shot as a spy. Meanwhile, Chad and Joe break their bonds and are dressed as Mexican soldiers allied with the French. Reese notices they are two of the four men in the firing squad and the brawl starts. Back in Laredo Chad and Joe convince Reese he is going to receive a medal. He finds out there is no medal from Parma

Hired gun Jab Harlan orchestrates an escape for outlaw Brad Scanlon so he can trail him and clear an innocent man of Scanlon's crime. In the process he tangles with Reese, foiling a capture attempt which brings him to Parmalee's attention. Scanlon, helped by his wife Lilah, pretends to be dead and soon is as he is ambushed by his partners to keep him quiet. Reese and Jab indulge in a little cat and mouse with each other after Scanlon's death. Reese, not knowing Scanlon's dead, locks Jab up until he can capture the outlaw. Jab sends Reese in the wrong direction and then picks the lock. Jab and Lilah ride out to the Garrett ranch to catch the rest of the gang. Reese returns to town and finds a note at the undertakers from Jab telling him to come to the ranch. He does and gets there just in time to help Jab in a gunfight with the outlaws and recover the money. Despite their disagreements Jab and Reese part friends.