 Jacques Montet, a successful crime story writer, has already written a hundred books and would like to call it quits now to devote himself to loftier writing. But his wife, a cold-hearted, money-minded, bossy woman won t allow. All the more as she is the one who supplies Jacques with the plots of his detective stories. When Jacques, yearning for true love, meets young, pretty Muriel, he can t stand the situation any longer. Fortunately - for him - the plot of the 101st detective story imagined by his wife is about a ... perfect crime. He simply has to follow her instructions to ... get rid of her. Everything goes according to plan until Jacques discovers a scary detail: the presence of a mysterious witness on the scene of the crime...