La tour de Nesle (1966)

The impetuous Queen Marguerite of Burgundy and her two sisters, Jeanne and Blanche, indulge in sumptuous orgies at night in the chambers of the Tour de Nesle. At dawn, their partners are murdered by men. Blackmail, murder, and intrigue lend a frenetic pace to this adaptation of Alexandre Dumas's eponymous novel.