From Doon with Death

When Margaret Parsons disappears, Inspector Burden tries to reassure her frantic husband that she will be back by morning. Privately, though, he is certain Margaret has run off with another man. But then the missing woman's body is found, strangled and abandoned in a nearby wood. And when Mr. Parsons lets the police into his home, a startling discovery leads everyone to question just who Margaret Parsons really was