Leonard Diamond
Susan Lowell
Joe McClure
Mr. Brown
Fante
Mingo
Police Capt. Peterson
Alicia Brown
Detective Sam Hill
Nils Dreyer
Ralph Bettini
Rita
Audubon
Young detective
Frank - Lab technician
Photo technician
Nurse
Detective
Fred (hotel clerk)
Miss Hartleby
Attorney Malloy
Bennie Smith, Boxer