Set in Paris at the turn of the 19th Century, Casque D'Or follows the love affair between gangster's moll, Marie (Simone Signoret) and reformed criminal Georges Manda (Serge Reggiani). When mob boss, Felix Leca (Claude Dauphin), takes an active interest in their affair, an underworld rivalry ensues leading to a treacherous and tragic end. Casque D'Or is a classic, poetic tale of doomed romance based on the true-life Leca-Manda scandal. Evoking the Belle Epoque period perfectly and with an unforgettable femme fatale performance from Signoret, Casque D'Or is considered a Becker masterpiece.