The Hand of Mary Constable

Professor Constable was the key scientist in a government project of earth-shaking importance. That's why Washington quaked when Constable fell under the influence of a medium who had reputedly materialized his dead child, Mary. Under the spell of 'Mary,' Operation Foxglove was going down the drain. With nowhere else to turn, Washington called in Alexander Hero, an operative of dubious reputation. Hero was - and they winced to say it - a psychic investigator. It was his job to sort out other-worldly facts from fiction. And the fact remained...Constable had proof, living - rather, dead - chilling proof! It was in his home, under glass - the gift of his beloved dead, cremated child, Mary. It was, fingerprints and all...the hand of Mary Constable.