Robert Preston
— Alex Dennison
Lynn Redgrave
— Monica Welles
Patrick Macnee
— David Mathews
Lawrence Pressman
— Lloyd Andrews
William Russ
— Frank Heller
Madolyn Smith Osborne
— Karen Daniels
Jeff Goldblum
— Leo Gibbs
William Daniels
— Walter Lamb
John Finnegan
— Damon
Nicholas Mele
— The First Officer
Vahan Moosekian
— The Moving Man
Charles Robinson
— The Second Officer
Wallace Rooney
— Ernie
Buck Young
— Lieutenant McElroy
Sergio Kato
— The Third Officer