The latest in a series of armed robberies on super-markets leaves a young cashier possibly paralysed when the thieves take her hostage and then push her from their speeding car to slow up the pursuing cops. The cars used by the robbers are specially modified "hill racers", leading to the local hill racing champion, an old friend of Hooker's, being wrongly arrested as the prime suspect. Hooker must prove his innocence by speeding after the real culprits...

Hooker holds himself personally to blame when a female rookie cop that he trained is seriously wounded in a confrontation with a pair of fleeing gun-shop robbers. With the officer needing her leg amputated as a result of the wound, Hooker and Romano, with help from Stacy and Corrigan, investigate the gun thieves, who are selling their hauls to a back-street crime baron...

Hooker, still haunted by the murder of his former partner five years previously, is determined to catch an unapprehendable band of bank robbers whose leader matches the description and tactics used by the his partner's killer...

Responding to a shooting at a cock-fight in China Town, Hooker thinks he catches a glimpse of a face from the past in the crowd. As he investigates the illegal dealing of automatic weapons in the area, the face turns out to be the daughter of a woman who he was once in love with, but had to cut off their relationship after her husband, presumed dead, had turned up alive. But now, the man is involved with the gun dealing, and sees that he has an old score to settle with Hooker...

Hooker, Romano, Stacy and Corrigan are staking out a small-time drug dealer when they find that a major drug supplier is involved – who is being staked out in a Federal investigation. Hooker is ordered to keep well away from anything to do with the Fed operation and any of the smaller dealers which may be involved with the drug ring, something which proves to be difficult and results in Hooker being suspended. But an old flame, who is a Fed agent, is undercover posing as the girlfriend of head of the ring, and Hooker, fearing for her safety, is determined to put the ring out of operation himself - even if it costs him his job...

Hooker, Romano, Stacy and Corrigan are involved in an undercover operation to nail a large cocaine dealing ring, when a highly respected fellow officer is killed, execution-style, by the ring, who are on to him. Tracking down one of the thugs involved, Romano is badly injured by a gun-shot wound, before Hooker captures the goon, who gives the lead of a crooked bail-bondsman who is involved with the dealing. Against the wishes of a DEA, Hooker and Corrigan go undercover as drug dealers, with Stacy posing as one of their carriers, to infiltrate the dangerous ring via the bail-bondsman and catch them in the act...

After Hooker and Romano foil an armed robbery committed by a family of robbers, which leaves the father wounded in hospital and the daughter held in custody, the two sons take the hospital wing with their father on siege, holding Hooker's ex-wife Fran, Stacy, a little girl urgently needing heart surgery, and a whole floor of patients hostage...

When a young female singer, whom Hooker has got cleaned up on a drug reform programme, is kidnapped, Stacy goes to work undercover as an exotic dancer at the club that they suspect to be a front for a white slavery ring that is dealing in attractive young women...

Despite being undercover dressed as Santa Claus, Hooker is finding it hard to get into the Yuletide cheer faced with his first Christmas away from Fran and the children; Stacy too, is low on Christmas spirit, after splitting up with her boyfriend. The Christmas blues set in even deeper when a drug stakeout doesn't go to plan, allowing the main target to get away. Later, after Stacy witnesses an armed hold-up by a man and woman connected with the wanted dealer, the woman is forced to abandon her young baby at a local church. As they try and get a lead on the offenders, Stacy looks after the young baby, but Hooker, Corrigan and Romano become concerned that she may be coming to attached to it too want to give it back...

On routine patrol with Corrigan, Stacy is shot when unwittingly walking in on an armed robbery, leaving her hospitalised in a coma and with a bullet lodged dangerously close to her heart. With Stacy facing precarious surgery, Hooker, Corrigan and Romano search out the robbers, who are armed with armour piercing bullets. But Hooker's determination to catch the thugs, no matter what, sees him putting his career on the line...

While on a prostitution sting, Hooker spots veteran vice officer Daniels' car parked outside a motel, and goes to investigate just as the officer is shot by an assassin. Both the gun-man and the prostitute Daniels was meeting with flee the scene, and the officer's superior reports that Daniels wasn't there on Police business, and what's more, was found with money suggesting that he'd been taking bribes. But Hooker is adamant that the veteran officer is innocent of the accusations, and has two days before the funeral to clear the officer's name and find out what he was really doing at the motel. The girl Daniels was meeting with holds the key to the true circumstances, and Hooker forces her ex-roommate, a reluctant, wise-cracking ex-prostitute, into helping him track the down. But the girl is hiding in fear from the dangerous porno producer who was involved with the officer's shooting...

A parking attendant's suspicion leads to the discovery of a woman's body in the trunk of a car, sending Hooker and the team on the trail of a psychotic killer who is on a cross-country murder spree. Meanwhile, the deranged killer lures a young woman into his clutches and takes her hostage, leaving behind her husband and sick baby. Hooker persuades the Detective in charge of the case to let him place a trap to try and catch the killer and get the woman back safely, but it places Stacy in great danger...

Corrigan and Stacy respond to a seemingly trivial call about an illegally parked vehicle, only to stumble onto an armed robbery of a check-cashing outlet. As Corrigan calls for back-up, Stacy intervenes in the robbery to stop a man from being shot, only to taken hostage by the trio of armed thieves. With Stacy held prisoner by the robbers, the head of the trio rapidly develops an ""obsession"" for her, much to the aggravation of his girl-friend, who is also one of the theives. As Hooker and Corrigan search for Stacy and the thieves, they risk taking on the might of City Hall when it becomes apparent that the father of one of the trio is involved in the Mayor's re-election campaign and is prepared to pull strings to keep the whole case quiet. Meanwhile, the trio's leader's obsession with Stacy continues to grow – and it is the only thing that is keeping her from being killed...

Pursuing a gang of robbers, Stacy receives a mild concussion in a shoot-out, and after being discharged from hospital, decides to take a break to go and visit her sister. But driving through a fierce thunderstorm and still in a slightly dazed state, she is involved in a minor road accident which leaves her with amnesia, and is taken in by a passing motorist who claims to be a local doctor. Meanwhile, Hooker and Corrigan become concerned at Stacy's sudden disappearance, and investigate a break out from a mental hospital where two dangerous patients have escaped - and unbeknown to them, one of the escapees is the man posing as the doctor who has taken in Stacy...

While on a stake-out to capture a strangler who is killing homeless women, Corrigan receives a blow to the head while struggling with a suspect, leaving him with a concussion which triggers sudden, unexpected bouts of enraged behaviour. But the suspect Corrigan took on isn't in fact the strangler, and with the real killer still on the loose, Hooker and the team must track him down before he strikes again. Corrigan's refusal to acknowledge his condition doesn't exactly help matters...

Romano, celebrating his new Porsche sports car, takes Hooker out for a night at a dance club, but the car is stolen, hitting a gypsy king as it speeds away. The injured man and his 10-year-old niece have been tracking the thieves trying to recover stolen automobile parts, but they refuse to give any information to the Police. The next day, the man is murdered, but the niece once again refuses to talk. Hooker reluctantly releases the girl into the custody of her older sister, hoping that she might open up to her about the killing, but the young gypsy girl is determined to avenge her uncle's death...

Following an execution-style murder connected to a drug racket, Hooker joins forces with ex-partner and personal friend Jim Cody to solve the killing and put the drug ring out of business. But as they investigate the case, it becomes apparent that Cody's own daughter is a heroin addict and involved with key members of the drug ring...

Hooker's children come to visit their father, but the vacation is interrupted after Corrigan and another Officer unwittingly disrupt an armed race-track heist, which leaves Corrigan's fellow Officer dead. The robbers were under the pretence of being ambulance attendants, and Hooker has reason to believe that the robbery was an inside job; but the case means that his time with his cherished kids is limited...

Hooker and Romano by chance spot a van swerving dangerously over the road – in which a pair of teenage prostitutes are being held against their will by two men. When the van crashes off the road, they find one of the girls dead after being strangled – the latest victim in a series of killings by ""The Boulevard Strangler"" and his accomplice, who are prying on young runaways. Hooker finds that the surviving girl has run away after being abused at home, and leads a double life – a perfect high-school student, and as a prostitute. But now the girl is in danger with the killers after her, who are concerned that she can identify them in the murder of the other girl... Meanwhile, Corrigan considers leaving the force to take a job teaching...

Investigating the killing of a fashion model, who had also been working as a high-class prostitute, Stacy's contact, another model, is too found murdered in similar circumstances. Stacy befriends the murdered girl's room-mate, and goes undercover as a model at the company that the girls belonged to, to try and root out the killer, who is using sale of the girls to ensure a large order of costumes. But Stacy's handling of the case causes some friction between Corrigan and herself...

The shooting of a masseuse girl in Chinatown convinces Hooker that a Vietnamese crime mob is operating in the area and trying to take over the district's message parlours. With information from a Vietnamese girlfriend of Corrigan's, Romano goes undercover at the parlour in the middle of the trouble as an outcall driver, while Stacy works as one of the massage girls; but when Stacy's cover is roused, Hooker must race to save her...

An attractive woman named Teri, whom Hooker meets when giving a speeding ticket, finds that her friend has been robbed and raped, and herself is attacked when she unwittingly stumbles onto the scene, until Hooker comes to the rescue. She aids him as they try to identify the violent gang behind the attacks, and in their together, they quickly fall in love, but things take a nasty turn when the gang track Teri down and badly attack and rape her. The result of the attack takes its toll on her and Hooker's relationship, and causes Corrigan, Stacy and Romano to become concerned that Hooker's fierce pursuit of the gang is being clouded by personal feelings and the want for revenge...

After an armed box office heist where the robbers escape on motorcycles leaves Hooker and Romano's patrol car destroyed by a bomb and a young man dead, Hooker and the team are on the look out for an infamous criminal named Willie Donovan, whom Corrigan has a grudge against after the collapse of a previous investigation. But a shoot-out with Donovan which leaves Donovan dead, a gun from the robbery room of Corrigan's previous Police department, and an exaggerated report of Police brutality from a informant all mount up to Corrigan being assigned to desk duty while he is investigated. Hooker intends to prove Corrigan's innocence, while putting a stop to the series of robberies...

Hooker and Romano give chase of a couple of armed robbers who have held up a local bank and taken a teller hostage - a high-speed pursuit which ends in the thieves' car ploughing into the side of a tanker. Hooker receives criticism over his decision to give chase, which deepens when it's learnt that the young woman taken hostage has lost her unborn baby as a result of the crash. An old girl-friend of Hooker's, now head of security at the bank, is concerned that the high-speed pursuit was unnecessary and is prepared to testify against him. Meanwhile, the extravagant couple of robbers, who go by the aliases of Bonnie and Clyde, are still at large and pulling heists...

Hooker and Romano are on patrol when their car is hit with a chemical based fire-bomb, which leaves Romano blinded. With Romano in hospital and facing permanent loss of sight, his girlfriend Maggie, a fellow Officer, takes his place as Hooker's partner as they investigate who was behind the attack and why. Unbeknown to them, a recently released convict, who's deceased cell-mate was put away by Hooker, has hired a chemical genius to wipe Hooker out, but the attempts on Hooker's life have deadly consequences for Maggie...