Supernatural - Season 2, Episode 7, The Usual Suspects
The Usual suspects
Sam and Dean investigate the murders of a lawyer and his wife who claimed to have seen a ghost right before they died. However, after local detectives Ballard and Sheridan uncover the Winchesters' records, they arrest the brothers for a double homicide before they are able to find the ghost. When the ghost begins to visit Ballard, she begins to wonder if the tale Sam and Dean are telling her could be true, and if she might be the next to die.