To solve there latest case Jack & Sue pretend to be a married couple. They need to find out why Joseph and Betty are funding terrorist acts. Sue meets Betty and learns she donates time to service dog charities. They try to come up with answers to questions Joseph & Betty might ask. As Sue tries to read Joseph's lips, Jack finds himself in love with Sue. Jack learns Sue is a great cook. Levi also falls in love. Miles hurts his car while tracking Joseph. The man Sue & Jack are tracking is assuming a dead man named Joseph who died in 1996 of a heart attack. Myles learns that one of the Virginia College students is planning to spread Bubonic Plague all over Washington D.C.

Trying to catch a long-awaited criminal, the team uses a jail-bound con man to capture him. The informant turns out to be Bobby's father, and Bobby is unhappy.

Tara decides to get her hair done, but soon a robber holds up the salon. Tara tries to go about business but has trouble dealing with what happened. Tara wonders if she should leave the FBI because she shot someone for the first time. Amanda (Sue's friend) finds a lost dog and wants to keep it.

After Bobby tries to protect a woman from an attacker, he is suspended from the FBI when the man turns out to be a Sudanese diplomat with immunity from US law enforcement. When the man is connected to a slave trade market, Darcy gets into some trouble of her own after she tells the public about the story.

Sue is asked by someone from high school to attend her wedding, One problem Sue's friend made fun of her. Sue and the gang have to find 5 prisoners that escaped after a prison van and semi truck crashed. As the gang looks for Jed they find that Wendy Stack testified against him because of abuse to wonder why she would visit him after the trial. The team finds out that evil Jed passed through a choke point to keep from finding the diamonds. As the wedding date for Sue's friend draws near Sue doesn't want to have old feelings of how she was treated to come back. Jack tries to cut a deal with someone to find Jed. Sue learns that David can't go to the wedding to attend a flower show. Sue is picked on at the weeding by someone who thinks Levi is a seeing eye dog after Sue explains Levi is a hearing dog. The football player finds out after visiting Sue that he should have stopped people from picking on her and the growing up can be hard to do.

The gang gets word of another shooting making this attack the third one in two days. Jack tells Sue that he was a Sniper before working for the FBI. Sue then gives Jack a report that tells only about the barrel of the gun used but not the type of gun used. Just as Jack goes to rest he learns the Mayor was shot. When Jack gives a press conference he gets the idea to make himself a target in hopes catching the sniper. Sue goes to the dance with David, but Jack doesn't want Sue to worry about the case.

Sue tries to stop an act of Ecoterrorism with the help of Joel. Who claims he was burned 12 years ago due to Ecoterrorism. Sue and the team tried to stop The Earth Emancipation Project from killing anyone else. Joel Finch agrees to go undercover with the FBI to stop EEP from doing something very dangerous.

Sue and Jack receive a memory stick with some interesting video of to man possibly plotting something. Sue and Jack set out to meet the couple that bought the memory stick to the FBI. When Sue and Jack go the hospital to meet Jonathan they soon have a problem. Johnson is asked to look at a picture of to man and see if he recognizes them, Jonathan unfortunately can only remember his name and nothing else. Jack takes Jonathan to places to see if he can remember anything. Jack takes him to a restaurant and a certain table but the only thing he seems to remember is how to someone to the ground. Jonathan tells Jack that he can't remember where he learned those particular moves. The team takes Jonathan to his hotel room to see if he can remember why he was there. As they begin to search through the mysterious man's belongings they find a suitcase full of money and a gun with a silencer on it and several passports with Johnson's picture on them. They learn that of the fake passports c

In the series finale Sue Thomas gets promoted to senior investigative analyst for the F.B.I. Sue is thrilled with the promotion but soon realizes that heading to New York City would mean leaving her friends. Jack becomes a victim of identity theft and feel sad when he learns of Sue is promotion. While trying to catch the person who's committing identity theft Jack realizes that he was almost shot at and might never have gotten to say goodbye to Sue.

Drivers of two security trucks that were carrying money, go missing while on duty. While the team searches for them, Sue helps Lucy improve her sign language when the two go to a deaf club, where talking is not allowed.

Lucy's Grandmother stops by with bad news. Mrs. Dotson will need to leave home and pay $110,000 to have them fixed. Lucy, Sue and Jack plan to stop Concove Construction by moving into a house the document as needing no repairs making Sue the homeowner and pay for repairs she can't afford. Lucy comes home to the smell of smoke leaving Lucy and Sue wondering why they smell smoke. Alice (Lucy's Grandmother) thinks the oven caused the smoke. In other news Levi lost his little companion Bunny in the end they cant find it so the F.B.I chip in to get Levi a new Bunny.

Howie tells Sue & Lucy someone is trying to kill him. After Howie tells Lucy and Sue someone is trying to kill him they find it hard to believe until Sue asks him exactly what happened. After Howie tells Lucy and Sue someone is trying to kill him they find it hard to believe until Sue asks him exactly what happened. Gunshots are fired proving Howie's point and making the case for the FBI to investigate.

Sue runs into an old friend at a deaf and poetry reading. Sue invites Carol to spend time with her and Lucy. Her husband Ted who is a financial money manager keeps Carol from spending time with Sue and Lucy. Leaving Lucy and Sue to wonder if everything is OK between Carol and Ted. Bobby and Myles have the displeasure of escorting Howie and Otis to a case out of town because they are informants in the case. As Bobby and Myles continue on their way to Arizona they learn something about Howie. He won't go to Arizona by plane because of his fear of crashing the plane so that forces Bobby and Myles to drive to Arizona. Tara and Lucy learn that Carol wasn't telling them whole truth. They find out that Ted made a lot of money. They also learn Carol had markings consistent with spousal abuse before, leading Sue, Lucy, Jack, and Tara to believe Carol pushed husband off the boat.

We last left the story with Jack and Jessica running into each other in Washington D.C. for the first time. Jessica tells the team that Jonathan wasn't going to be found unless he wanted the team to find him. The team is led to believe that Jonathan killed Mr. Wells and took the hard drive out of his computer. Things only begin to get crazy as Jonathan begins to remember things. Sue gets a message on her blackberry indicating Jonathan would like to talk with her about some things he has remembered. He tells her he remembers seeing a car with license plate. As Sue tries to get more information the team is tracking Jonathan to office building. Jessica gets rather angry when the team loses Jonathan due to his escape from the office building just as he was about to remember something more. Tara begins to discover something interesting about Mr. Wong files that indicates a patriot missile targeting system.

Having been handed a case about an infamous convict, the team tries to get closer to the convict through his partner, who is deaf.

Dimitrius gets a less than pleasant surprise when a man he had thrown in prison twelve years ago begins to spy on him and his family. Meanwhile, Lucy battles with a doctor who claims that her car dented the passenger door on his car.

The team races against time to find a crate of strontium which they believe will be used to make a dirty bomb. Lucy fears for her family when they are coming to her sister's wedding.

Sue meets Amanda, who tells her she saw a kidnapping. Everyone has trouble believing the story except Sue. Sue first met Amanda at Career Day some years ago. Myles meets Nora who wants to write a book on him. Sue learns someone died of Ricin poisoning by Castor Beans. To make sure her story is true, Amanda see the kidnappers again (after sneaking out of her home) she plants a tracking device. Tara gets a note that terrorists know where Amanda lives, Amanda's dad wants help in communicating with Amanda. Myles gives Nora an idea for her book, she wants to focus on Amanda and get to know Myles.

Sue helps look for Katie who was kidnapped from Gallaudet University. Sue & Jack question Lance who says he didn't kidnap Katie. Sue & Jack don't believe the story. Sue learns that Katie was adopted and found her biological mom after 19 years.

Sue tries to help a holocaust survivor find the man that killed her parents 60 years ago. Sue realizes that the case soon becomes personal for her after learning what Helga suffered as a result of being in a concentration camp. Sue learns that 60% of the estimated 6 million Jews that were killed were also considered "" Detective "" because of being deaf or having some other kind of handicap. Helga tells Sue that a man named Otto Zimmer killed her parents. As Helga and Sue are playing cards Otto Zimmer is spotted outside Sue Jack and Helga trying to run after the cab to catch him. Helga describes for Sue and Jack what the past 60 years were like for her and realizing that she not only saw her parents and sister killed, she also learns that even the capture of the man that took the lives of her parents and sister are only just the beginning of healing 60 years worth of pain.

Sue meets Jack and Bobby 's mentor who comes to Washington D.C. to ask for help in tracking a suspect whom Wes Kenner believes brought weapons grade uranium into Washington. Jack, Bobby, and Sue must try to track him down before the uranium is used to make a bomb. Dimitrius acts as a relief supervisor for Ted Garrett who is on vacation. Dimitrius gets in trouble for giving the go ahead to take over see case that began in Washington D.C. 's jurisdiction. Larson doesn't like the way Dimitrius is handling the case due to his lack of experience in dealing with the Russians. The team must go to court to make an appeal to have the case kept in Washington D.C. 's jurisdiction. Tara learns that Jack and Bobby's mentor faked his own death. The team must go to court to make an appeal to have the case kept in Washington D.C. 's jurisdiction. Tara learns that Jack and Bobby's mentor faked his own death. Jack soon figures out that was the only way to learn that help was needed.

Sue does some digging into Troy's past only to learn that Tory's brother Ben came back into his life. Sue and Jack head to the local gas station to tell Troy that his brother Ben will be a dinner guest Tory doesn't like the idea. Also Bobby continues to perform at The Black Dragon and stop The Scorpions (a Chinese gang) from delivering heroin to The Black Dragon. Troy gets to meet his brother's wife and his son who is deaf Troy figures that his brother just wants something from him because of his handicap. Troy is angry because his brother walked out on him as a little boy.

The Deputy Attorney General has a problem with Jack's handling of the latest case. Jack wants to transport someone who may have possible information on a terrorist attack from Malaysia to the United States. The deputy attorney general denies Jack's request because he fears Jack maybe bringing a terrorist into the United States. Meanwhile Adam Kinsey of "" final flight gets unprecedented access to continue researching his role as an FBI agent. The unprecedented access gives the team problems when his personal gets in the way. Things get slightly more complicated for Tara when Stanley her old boyfriend returns to help crack the code of a possible terrorist plot from "" the king of terror.""

For latest case Sue wants to get into the mind of the serial killer but this case but this case could end her career with the FBI. Things begin to get difficult after Sue get national attention from a newspaper for promising to catch the killer. The first murderer is of a talk-show host whose fingernails were removed and her body was positioned with great care. She was also wearing a scarf. Sue begins doing some research on serial killers minds and how they work. The killer begins chatting with Sue on the Internet and asks her to play a game of "" Simon says "" the serial killer requests that she, alone and play the game, if she doesn't dwell women might die.

Randy makes an odd request of Sue. He asks her for some help with woman he is about to meet there is one problem in the correspondence Randy and his date have shared over the computer she forgot to tell Randy she was deaf. Sue now has to accompany Randy on his date to help him with the sign language.