A shooting in a restaurant bathroom leaves one dead and one wounded. Initially, the police concentrate on the murder victim Milton Garner, but further investigation reveals that the survivor, Dr. Leon Mayer, was the intended target. He is a psychiatrist who charges high fees to appear as an expert witness in criminal trials, and was in New York to testify in a high-profile murder case. Mayer has won dozens of cases for the defense by convincing a jury that the defendant was dissociating. Briscoe and Curtis work out that the shooter is a woman and hid out in the women's bathroom after the shooting. Witness descriptions lead them to Lindsey Carson.

Lindsey's father, Arthur Rigg, shot and killed two people at his workplace after being fired. The jury found him guilty despite Mayer's testimony. Evidence indicates that Lindsey hid Rigg's gun for him, and later used it at the restaurant. She enters a not guilty plea on the grounds of mental defect - saying she was dissociating, the same defense Rigg used. Lindsey says she blames Mayer because he didn't prepare Rigg's case properly. Mayer was hired at very short notice, and the judge refused a continuation to give him more time. This entitles Rigg to an appeal on grounds of due process, but he couldn't file because Mayer refused to testify.

In court [=McCoy=] produces a transcript from Rigg's trial, in which Mayer referred to events that happened after the murders. He could only have known about this if Rigg told him; proving Mayer knew Rigg did remember and wasn't dissociating. He committed perjury on the stand, and then refused to help with the appeal so that he wouldn't get caught. Lindsey says Mayer refused to talk to her, so she followed him around the city and tracked him down to the restaurant. He called Rigg a murderer, and she was enraged and fired at Mayer, but also killed Milton Garner in the process. She accepts a plea for second degree murder.

!!Tropes present in this episode
* BackfireOnTheWitnessStand: Mayer testifies on Lindsey Carson's trial, offering the same defense argument of dissociative disorder. However, when asked why he refused to help during her father's appeal, he is forced to admit under oath that he felt he perjured himself, thus confirming she did have motive and that her father was not insane when he committed murders.
* BrokenPedestal: Lindsey experiences this after realizing her father really did kill two people in cold blood.
* DaddysGirl: Lindsey and Rigg are close, and she is determined to prove his innocence.
* FakingAmnesia: Both Rigg and Lindsey attempt to use a purported psychological condition which includes amnesia about its duration. However, Rigg was capable of telling Dr. Meyer about an incident which happened during his claimed amnesia, and Lindsey ultimately admitted that she was faking it.
* INeverSaidItWasPoison: A varient. Rigg claimed not to have memory of the time when he attacked someone with a screwdriver, yet Dr. Meyer knew of this, and could have only known from Rigg himself, proving that Rigg did, in fact, remember it.
* MurderByMistake: Milton Garner wasn't the intended murder target.
* SkewedPriorities: When asked to describe the shooter, a witness is more disgusted by this person wearing a fake designer bag and shoes than the fact she murdered someone.
* StalkerShrine: Downplayed - Lindsey had a huge collection of newspaper clippings about Mayer and photos of him.