Vanish In An Instant — Margaret Millar

Viginia Barkeley, spoiled child of a wealthy family, sat in a Michigan jail cell and refused to answer her lawyer's questions. Her husband knew that she had been out with Claude Margolis. Her mother knew that Virginia was capable of killing Margolis with a knife. Even Virginia's own lawyer, Eric Meecham, believed she was guilty in as much as he believed anything at all.

Then Meecham was approached by a young man with a weirdly distorted body and death in his face. Earl Duane Loftus brought with him a signed confession which the police were unable to disprove. But if Loftus was telling the truth, he had killed a man on impulse, a man he had never seen before.

Meecham who doubted everything, doubted this. So he set out to find the truth, a truth that when he did find it was more shocking than anything he could have expected.