Patrice Kerbrat

Robert is an architect and artist, in Vichy after separating from his Parisian wife. Robert finds it calms him to stand in the shadows of the home of Juliette and Patrick and watch her cook. She thinks he's a prowler and confronts him, then invites him in...

Doctor Valois has invented the "flashage", a cure for depressed people. After having tested it on monkeys, he tries with a first human patient, Alain Durieux. This is great success, everybody's happy except may be Alain's wife, Jeanne, who's worrying about the changes in Alain's personality. Other patients use the treatment with similar successes, and Valois's happy about it. But the monkeys are changing: non-cured ones are made mad by the over-stability and stereotyped behaviour of the cured ones. So are the humans. When Valois realises he can't stop the process, he decides to "flash" himself.