Near Aix-les-Bains (South-East of France), two women, Kassia and Leonora, are driven by a fanatical blackmailer, named André, in a white Rolls Royce at full speed. Suddenly, they stop near a lake, in the middle of the woods, where the man decides to have a swim. He asks the two women for a drink. The women plan to assassinate him by introducing a deadly leaf from a Thanatos tree in the cocktail. The man dies by poisoning and drowning and the women stare at him without moving. (imdb)