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During the Cold War, a preeminent cybernetics expert, Dr. Samuel Constable (Ray Milland), believes he's been contacted from beyond the grave by his recently deceased daughter. A paranormal researcher, Alex Lauder (Don Murray), investigates the visitations. When he discovers that government agents are monitoring the case, Lauder must decide whether the paranormal contact Constable is experiencing is real or an elaborate governmental conspiracy to foil his cybernetic research. Wikipedia