Agatha Christie,
A Trap for the Unwary
(1923)
“ A clever devil, this Olga Stormer; she had rid herself of a rival, and he was to suffer for the deed. Murder! My God, they hung a man for murder! And he was innocent-innocent! A stealthy rustle recalled him. The little maid was sidling towards the door. Her wits were beginning to work again. Her eyes wavered to the telephone, then back to the door. At all costs he must silence her. It was the only way. As well hang for a real crime as a fictitious one. She had no weapon, neither had he. ”
