Marseilles, and two youngsters under the influence of a demon third, Max, are well up over their sixteen-year-old heads when they extort 500,000 francs out of an antique dealer, later killed, as is Max. An act of honesty and heroism makes the police dismiss their earlier involvement as a ""sick practical joke"" but you'll either write it off as a pleasant pleasantry, or just faintly sticky kid stuff.