The initial portion of this film, Hammer’s venture into science fiction, manages to be genuinely engaging: two friends create a device capable of reproducing anything at all—living things, inanimate objects—whatever comes to mind. When "Robin" (played by John van Eyssen) weds his childhood acquaintance and co-developer, "Lena" (Barbara Peyton), his partner, "Bill" (Stephen Murray), decides to produce an exact copy of…