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John Bedford is suspected of being the murderer of his wealthy aunt, Miss Ferguson, but the police are unable to break his alibi. Now, exactly two years after the crime, a retired Scotland Yard investigator named William Brent, puts together a plan that he hopes will make the nephew confess. Brent invites the young man to a dinner in the home that once belonged to the late aunt, and secretly hires an actress to pretend to be the ghost of the dead woman. Everyone at the dinner is in on the scheme, and when the apparition appears, no one claims to see anything - but Bedford, that is.