Shayne (Lloyd Nolan) is just about to take Joanne (Mary Beth Hughes) to get married when he hears a scream in a nearby hotel room. He discovers that two people have been murdered while having dinner, the two people being old theatre folk and the crime scene itself is rather theatrical.
Shayne begins to unravel this baffling crime which as usual has many possible suspects. Can Shayne solve the crime before Inspector Pierson (William Demerest), and more importantly Joanne, lose patience with him?
A fine crime B-movie, with the usual complicated but fast moving plot, red herrings aplenty and some snappy dialogue. Nolan's Michael Shayne was an excellent character, this being the third movie in a series of seven.