Here’s an interesting cover for Mario Ropp’s Celle des deux qui vivait, which means “which of the two lived.” If we had to guess, we’d say it was the driver. Following standard practice for French crime authors, Ropp was actually a pseudonym for someone named Marie-Anne Devillers who wrote for twenty-seven years under various names, including Dominique Dorn, Maia Walbert, Maia de Villers, and Michèle Vaudois. The art here is by Michel Gourdon and it certainly qualifies as one of his quirkier efforts. See more Gourdon here and here.