Slasher S.A.

A mysterious diver hiding in Amsterdam's canal system embarks on a rampage of gruesome murders, terrifying city officials and leaving few clues for the city's best detective, who doesn't suspect that both his new girlfriend and twelve-year-old daughter may be closer than he is to finding the killer.

The Marquis de la Chesnaye and his wife host a weekend gala where a variety of complicated romantic and social entanglements between guests and servants lead to tragedy, all against the backdrop of a looming war.