Mystery fiction. Detective and mystery stories. A middle-aged schoolteacher wins the French lottery and looks around for somewhere safe to invest her prize. Unfortunately for her she decides to consult the unscrupulous John Throgmorton, and he seizes a once in a lifetime opportunity, murdering the unsuspecting Miss Haslett and sending his secretary and partner in crime, Hermione Taylor, to Paris to collect the money. Throgmorton's devious plan is executed to perfection, and it seems that nothing can go wrong. But then he receives an unexpected visitor.