크레딧 출연 George Sanders Gen. Armstrong Maurice Evans Dr. Matthews / Alien Patrick Allen Bob Megan Neil Connery Jim Radford Robert Flemyng W.C. Baldwin Pamela Conway Lorna Allan Cuthbertson Hindsmith Michael Culver Lt. Bailes Sally Faulkner Joanna Shelagh Fraser Mrs. Thatcher Hilary Dwyer Julie Slade Dennis Chinnery Control Officer 스텝 Gerry Levy Directing C. Wilfred Arnold Art Michael St. Clair Writing Gerry Levy Crew John Workman Production Tony Tenser Production Howard Lanning Editing John Workman Directing Reg Tilsley Sound John Coquillon Camera