Ralf Milan, a hitman, arrives in Montpellier to kill an important witness. He checks in a hotel without knowing that his neighbour has become neurotic after his wife left him.
L'emmerdeur is a 1973 French-Italian black comedy film, starring Jacques Brel, appearing in his tenth and final feature film. Directed by Édouard Molinaro and co-starring Lino Ventura, Caroline Cellier, and Jean-Pierre Darras, L'emmerdeur is an adaptation of Francis Veber's 1971 play Le contrat.