Robert Middleton
Police Capt. Peterson

Helen Walker
Alicia Brown

Jay Adler
Detective Sam Hill

John Hoyt
Nils Dreyer

Ted de Corsia
Ralph Bettini

Helene Stanton
Rita

Roy Gordon
Audubon

Baynes Barron
Young detective

James McCallion
Frank - Lab technician
Tony Michaels
Photo technician