The Case of the Duplicate Daughter (Perry Mason, #62)

Muriell Gilman left her father at the breakfast table while she cooked seconds of sausages and eggs. When she returned, he had disappeared - seemingly into thin air. She searched the house from cellar to attic. Then she went out to the workshop. There, scattered on the floor, were hundred-dollar bills, and in their midst, a spreading crimson stain. That's when she telephoned Perry Mason.