One Is Guilty
Directed by	Lambert Hillyer
Written by	Harold Shumate
Produced by	Irving Briskin
Starring	Ralph Bellamy Shirley Grey Rita La Roy
Cinematography	John Stumar
Production company	Columbia Pictures
Distributed by	Columbia Pictures
Release date	March 31, 1934
Running time	63 minutes
Country	United States
Language	English

One Is Guilty is a 1934 American pre-Code mystery crime film directed by Lambert Hillyer and starring Ralph Bellamy, Shirley Grey and Rita La Roy. It is the second in a series of four films featuring Bellamy as Inspector Steve Trent following Before Midnight.^[1] Two further films The Crime of Helen Stanley and Girl in Danger were released later in the year.

Plot

The body of a championboxer is found in an apartment complex. Various suspects appear to have had the opportunity and the motive to kill the fighter.

Cast

• Ralph Bellamy as Police Inspector Steve Trent
• Shirley Grey as Sally Grey
• Warren Hymer as 'Knock-Out' Walters
• Rita La Roy as Lola Deveroux
• J. Carrol Naish as Jack Allen
• Wheeler Oakman as Toledo Eddie Marchetti
• Ruth Abbott as Miss Mabel Kane
• Willard Robertson as Wells Deveroux
• Ralph Remley as 'Pop' Daley
• Vincent Sherman as William Malcolm
• Harry Todd as Danny O'Keefe
• Sam Flint as Coroner