George C. Scott character Walter Upjohn Ballentine
Joanna Cassidy character Eleonora
Sorrell Booke character Al G. Karp
Clifton James character Bulldog Streiger
Bob Balaban character Victor Karp
Bibi Osterwald character Mums Gornik
G. Wood character Andrew Constable
Frank McRae character Herman Lincoln (aka Herman X)
Don Calfa character Stosh Gornik
Liam Dunn character House Painter
Jack Riley character Agent Jackson
Hank Stohl character Johnson