Natural or Supernatural?
Scientists and US Air Force officials fend off a blood-thirsty alien organism while investigating at a remote arctic outpost.

Robert Nichols
Lt. Ken 'Mac' Erickson
William Self
Corporal Barnes
Nicholas Byron
Tex Richards

Eduard Franz
Dr. Stern
George Fenneman
Dr. Redding

Paul Frees
Prof. Voorhees

Everett Glass
Prof. Wilson

Norbert Schiller
Dr. Lorenz

Edmund Breon
Prof. Ambrose

John Dierkes
Dr. Chapman