Singer Jenny Lamour and pianist Maurice Martineau, a married couple, are well known among the Paris theater and nightclub set, he not only her accompanist but that for a music publisher and thus many singers. Maurice is prone to jealousy, in many respects well founded as Jenny will often use her sexuality with men to advance her career. Elderly Georges Brignon, recognized by those who know him as a proverbial dirty old man, is only the latest man with who Jenny flirts as he has promised to get her into films, she lying to Maurice about her association with him to curry that favor, while Maurice in turn has stated that he wants to kill him. Things get complicated when Brignon is found dead in what on the surface is murder, the investigation led by grizzled Inspector Antoine. Unknown to the other, both Jenny and Maurice individually perpetrate a complex web of lies and fake alibis, not as perfect as either would have wanted, to steer Antoine off their trail as having possibly even committed the murder. The web is made even more complex in that they have both solely confided to their neighbor and friend Dora Monnier, who runs a photography studio on the street level of their complex, Dora's actions, in turn, stemming from a case of unrequited love.—Huggo