The Undercover Man

Glenn Ford

Frank Warren

Nina Foch

Judith Warren

James Whitmore

George Pappas

Barry Kelley

Attorney Edward J. O'Rourke

Frank Tweddell

Inspector Herzog

Howard St. John

Joseph S. Horan

John F. Hamilton

Police Desk Sergeant Shannon

Leo Penn

Sidney Gordon

Joan Lazer

Rosa Rocco

Esther Minciotti

Maria Rocco

Angela Clarke

Theresa Rocco

Anthony Caruso

Salvatore Rocco

Robert Osterloh

Emanuel 'Manny' Zanger

Kay Medford

Gladys LaVerne

Patricia Barry

Muriel Gordon

David Bauer

Stanley Weinburg

Richard Bartell

Bailiff

Peter Brocco

Johnny (uncredited)

John Butler

Grocer / Bookie

Wheaton Chambers

Parker's Secretary