Harry Angel is hired for to track down the big band singer Johnny Favourite. What seems like a straightforward missing person case dramatically becomes a murder hunt for this down-and-out private detective. His client Louis Cyphre, a mysterious stranger, is forced to up his fee to keep Angel on the case. Each of Angel's leads ends up as a victim of a ritualistic act of murder as he begins to put together the pieces in the jigsaw of Johnnys' strange story ... The nightmare has only just begun.