René Clément’s Les Félins is a brilliantly over-the-top gangster-murder-mystery medley set on the Côte d’Azur and starring French sensation Alain Delon as Marc, a small-time swindler who’s running from his girlfriend’s mobster-husband and finds refuge in a brooding mansion owned by two mysterious women (Jane Fonda and Lola Albright), soon embroiled in a dangerous game of deceit and fear…