Jon Voight

Dr. Robert Gale

Jason Robards

Dr. Armand Hammer

Sammi Davis

Yelena Mashenko

Annette Crosbie

Dr. Galina Petrovna

Ian McDiarmid

Dr. Vatisenko

Vincent Riotta

Valery Mashenko

Steven Hartley

Aleksandr Mashenko

Jim Ishida

Dr. Terasaki

Alex Norton

Dr. Andreyev

Trevor Cooper

Feodor Lashelya

Sebastian Shaw

Grandpa

Anne Dyson

Grandma

Chris Walker

Grisha

Lorcan Cranitch

Chernov

Karen Meagher

Anna

Jack Klaff

Dr. Pieter Claasen

Caroline Milmoe

Sonya

Yuriy Petrov

Viktor Vasilichyov

Igor Livanov

2nd Operator

Dmitri Matveyev

Doctor