출연진
Ed Bishop
Cmdr. Ed Straker
George Sewell
Col. Alec Freeman
Michael Billington
Col. Paul Foster
Wanda Ventham
Col. Virginia Lake
Vladek Sheybal
Dr. Doug Jackson
Derren Nesbitt
Craig Collins
David Warbeck
Skydive Commander
Shane Rimmer
Lt. Bill Johnson / Alien / CIA Agent
Deborah Grant
Linda Simmonds
Patrick Allen
Turner