Anton Thibodeaux was a mentally unstable man who was obsessed with astronaut Marga Janssen, later becoming a suspect in her murder as a result.
History[]
Anton was obsessed with astronauts, with it being well known that he would be seen on NASA property. However, his main focus was towards Marga Janssen, writing letters to her out of distrust to the Internet and having her sign one of his books. He genuinely believed he and Marga were friends destined to one day be together.
Following Marga's murder, he started his own investigation before he was found by SVU. He promptly agreed to help after meeting astronaut Colonel Dick Finley. When questioned, Thibodeaux stated he didn't see any suspicious being around Marga, though flew into rage at the person who took Marga from him. Thibodeaux was put in a lineup but was not identified as the killer.
After being cleared, he was manipulated by the real killer, Colonel Dick Finley, who made him believe Vincent Beckwith was the murderer. As Beckwith was being led out of the SVU precinct, Thibodeaux promptly stole a pistol from a police officer and used it to kill him. He told Finley that he got Beckwith but he was surrounded. Then to silence him, Finley tackled him and shot him in the stomach, pretending it was in self-defense.
Finley was later charged with Anton's murder. (SVU: "Lunacy")