After a young victim with a developmental disorder is taken hostage in a bank robbery, Moretti brings in Pierce to interview the boy. When they finally track down the cul ...

Pierce and Moretti search for a killer when a prosecutor dies in the middle of a courtroom; Moretti and Donnie make some decisions about their future. ...

Daniel is in Paris enjoying his time with Miranda. But things change when a man who says he's federal agent attached to the embassy, approaches him and asks him to help t ...

Pierce's academic career is threatened when he hallucinates in class. Meanwhile, he, Moretti, and a RCMP officer track a serial killer who is stalking Pierce's former the ...

Pierce receives a tip that the CIA might be assassinating U.S. citizens; one of Pierce's close friends is murdered; Moretti tries to overcome her trust issues. ...

Lewicki's brother shows. He is later arrested for killing a gang member. Daniel tries to help but all the evidence points to him as the killer. Lewicki's so upset that he ...

An autistic boy obsessed with trains, appears to have killed a security guard when he unexpectedly moved a train. Pierce realizes he actually prevented a railroad collisi ...

In the conclusion of Wounded, Kate goes on trial for the death of Sgt. Rickford. Donnie resigns his job to become her defense attorney even though Kate begins to doubt he ...

After a decorated war hero is arrested for destroying a convenience store, Daniel believes her erratic behavior is the result of an infection that produced swelling in he ...

Daniel agrees to help a woman accused of killing a nurse in a state hospital even though it means going undercover inside an asylum. Once he's inside, his own hallucinati ...

Moretti calls on Pierce to determine the credibility of a man's death-bed confession; Pierce and Moretti try to uncover the truth about a series of apparent homicides. ...

Daniel sees a man who has Parkinson's have a bad reaction to an implant that is suppose to help him with his symptoms. And when other people with similar implants either ...

In order to get information on a murder suspect, Daniel and Kate have to go undercover in an online gaming community. But being immersed in an imaginary universe is hardl ...

Pierce consults on a case in a small town where teenage girls are suddenly displaying symptoms of Tourette's Syndrome. If it isn't from environmental poisoning or a bacte ...

A series of murders take place in front of witnesses who aren't even aware that someone has been killed. Pierce struggles with getting the FBI to accept his theory of mas ...

A woman becomes convinced that her husband is no longer really her husband. When it appears she has murdered him she claims she really didn't kill her husband - only his ...

Pierce is hired to determine the competency of a convicted murderer who has been granted a new trial. After examining the killer, who had subsequently suffered a brain in ...

Moretti learns there may be some truth to Pierce's conspiracy theory. ...

Pierce is tipped off about a conspiracy to cover the murder of a Senator. ...

Pierce thinks that one of his students didn't write the paper he submitted. So he tells Haley who doesn't want to jump the gun. Pierce thinks it's because the student is ...

Kate wants to impress a new boss and asks Dan to evaluate a young man who's been accused of stalking a federal judge. The judge earlier remanded the young man for treatme ...

Kate approaches Daniel and asks for his help. It seems like a psychiatrist who was going to testify against a crooked insurance company was murdered. So she arranged for ...

A young man in a cult claims to be hearing the word of God. ...

While Pearce reads the newspaper, he sees a cryptographer who tells him that there's a secret message in the paper. Pearce looks at a letter sent to the editor and sees s ...

The FBI is trying to find a serial killer who was last active 26 years who appears to be active again. One of his victims from 26 years ago was so traumatized that she wa ...

Frank Prentice reports his Ukrainian mail order bride Olena Marchenko missing, but becomes the prime suspect when she's found murdered. After Pierce diagnoses him unable ...

Neurotic, eccentric Chicago neuroscience professor Daniel Pierce accepts assisting former favorite student Kate Moretti's FBI team with a mysterious murder. He starts by ...

When the body of a local college fraternity student is found gruesomely murdered, Castle has to go undercover as a professor in order to gain access to the victim's world ...