Robert Foxworth

Alvin Karpis

David Wayne

Maynard Richards

Kay Lenz

Shirley

Gary Lockwood

Fred Barker

Anne Francis

Colette

Chris Robinson

Earl Anderson

Eileen Heckart

Ma Barker

Harris Yulin

J. Edgar Hoover

James Gammon

Alex Denton

Robert Emhardt

Dr. Willards

Alexandra Hay

Vicky Clinton

Charles Cyphers

Arthur 'Doc' Barker

Gerald McRaney

Smith

Fred Sadoff

Frank

Kelly Thordsen

Chief of Detectives

Lenore Kasdorf

Rita

Charles Bateman

Aide #1

Mark Roberts

Aide #2

Betty Anne Rees

Mary

Whit Bissell

Senator McKellar

Robert Patten

First Washington Agent

Eric Scott

Bert

Claudia Bryar

Landlady

Queenie Smith

Flora

Bill Zuckert

Sheriff C.R. Kelly

James B. Sikking

New Orleans SAC

William Conrad

Narrator (voice)