
Plot
Professor Samuel Hale Constable is a government expert in the field of cybernetics. He and his wheelchair-bound wife Lenore became parents late in life, only to lose their daughter Mary before she reached adolescence. Now their daughter's spirit seems to be reaching out to her grief-stricken father from beyond the grave, encouraging him to give up the important project on which he's been working.
Trailer
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Cast

Don Murray
Dr. Alex Lauder

Ray Milland
Prof. Samuel Hale Constable

Gene Tierney
Lenore Constable

Barbara Dana
Tina Cryder

Ed Asner
Saul Wiener

Pamelyn Ferdin
Mary Constable

William Beckley
Arnold Watson Bessmer

Ivor Barry
Dr. Paul Cryder

George Macready
Dr. Frank Ferguson

John Carradine
Mr. Bosch

Virginia Christine
Helga

Cecile Ozorio
Devi Bessmer

Frank Maxwell
General Augstadt

Hal Frederick
C.I.C. Technician

Bill Hickman
Enemy Agent