A man wakes up in a hospital bed with no recollection of who he is or how he got there. His nurse Diana is unable to find any identification and refers to him as John Doe. The police barge into the hospital, accusing John of being a serial killer responsible for the murder of several young women in the area. As the Sergeant ushers John into a private room for questioning, he manages to escape with the help of Diana, who is convinced of his innocence.