As an intelligent thriller, "Sans Mobile Apparent" allows viewers to keep on guessing about the real motives of a shrewd criminal. It does not take viewers long to realize that a criminal case has become too tough to be solved when there is hardly an apparent motive for a crime. Director Philippe Labro chose to narrate his story in a 'fast pace' mode as a lot happens in three days. It is only through meticulous planning and research that a determined police inspector is able to unearth that some past events are casting their shadows in the form of present day killings. French actor Jean Louis Trintignant is a perfect choice as a no nonsense cop who is absolutely serious about his job. His dedication to his work is so perfect that he does not even tolerate his colleagues eating chewing gum. Although "Sans Mobile Apparent" has been compared with other Hollywood films, it is unique in its own narration of a milieu where rich people lead rakish lives with fatal consequences. Monsieur Philippe Labro is an important personality in the world of French cinema. Apart from making films, he has written many best selling novels as well as articles for magazines. He has also appeared on television. As one looks at his filmography, it is rather strange to note that he no film was directed by him in last three decades. His last film "Rive Droite Rive Gauche" with Gérard Depardieu and Nathalie Baye was made in 1984. However, one should feel happy to learn that as an active filmmaker Philippe Labro has made seven important films which are known for their elements of suspense and thriller.