Roy Thinnes
Colonel Glenn Ross
Acting
Ian Hendry
John Kane
Acting
Patrick Wymark
Jason Webb
Acting
Lynn Loring
Sharon Ross
Acting
Loni von Friedl
Lisa Hartmann
Acting
Franco De Rosa
Paulo Landi
Acting
George Sewell
Mark Neuman
Acting
Ed Bishop
David Poulson
Acting
Philip Madoc
Dr. Pontini
Acting
Vladek Sheybal
Psychiatrist
Acting
George Mikell
Captain Ross
Acting
Herbert Lom
Doctor Hassler
Acting
Nicholas Courtney
Data Analyst
Acting
Peter van Dissel
Mallory
Acting
Jon Kelley
Nurse
Acting