Guest Stars Robert Emhardt as Heinrich Beckman Lynn Loring as Neila Nillson Pamela Curran as Inga Bergstrom Bill Hickman as Erik Co Starring Peter Brocco as Dr. A.C. Nillson Horst Ebersberg as Swen Craig Chudy as Thrush Agent Martin Kosleck as Dr. Pederson Uncredited Hank Robinson as Otto