Saint Tropez. Julie Wormser and her lover, writer and neighbour Jeff Marle, plan the murder of her wealthy husband Louis, an impotent who drinks a lot. She hits him, and leaves the rest of the task to Jeff. Julie finds herself alone the following day, and becomes therefore the prime suspect. Where is Louis' body? Where is Jeff? Is there any secret beyond a door? Nothing is what it seems in this highly acclaimed taut thriller.