Tim Grayson is a suspect in the murder of Rachel Caldwell, his neighbor. Grayson was tried when he believed he saw a psychic vision of Rachel's murder and tried to warn her. In reality, he witnessed the murder, but his mind made him treat his memories as predictions of the future to handle witnessing the murder better.
After Grayson testified against the real killer, Leanne Parks, he was released. (L&O: "Seer")