John Dortmunder

Robert Redford

Acting

Andrew Kelp

George Segal

Acting

Stanley Murch

Ron Leibman

Acting

Alan Greenburg

Paul Sand

Acting

Dr. Amusa

Moses Gunn

Acting

Lt. Hoover

William Redfield

Acting

"Sis" Clara Kelp

Topo Swope

Acting

Ma Murch

Charlotte Rae

Acting

Frank, the Prison Warden

Graham Jarvis

Acting

Policeman

Christopher Guest

Acting

Abe Greenberg

Zero Mostel

Acting

Rollo the Bartender

Harry Bellaver

Acting

Happy Hippie

Seth Allen

Acting

Cop At Police Station

Robert Levine

Acting

Policeman

Ed Bernard

Acting

Dr. Strauss

Lee Wallace

Acting

Albert

Robert Weil

Acting

Miasmo

Lynne Gordon

Acting

Bird Lady

Grania O'Malley

Acting

Otto

Fred Cook

Acting

Big Museum Guard

Mark Dawson

Acting

Museum Guard #1

Gilbert Lewis

Acting

Museum Guard #2

George Bartenieff

Acting

Policeman

Charles White

Acting

Prison Property Clerk (uncredited)

Albert Henderson

Acting

Police Officer (uncredited)

Burt Richards

Acting

Prisoner (uncredited)

Arnold Williams

Acting