a 4 only due to the brilliant ( vincent lindon a marc and and the equally brilliant emmanuelle devos a agnès ) performances in this pretty much 2 person movie . f. tabouring above review be excellent and but he seem to miss the most obvious and real point of the movie and which be and quite simply and ridiculous . the premise be excellent and and the movie begin and continue halfway excellently and unfortunately emmanuel carrère and the novelist and screenplay and director have no idea what to do from midway to the end . i do not read the novel and but if this be a faithful adaption and then i can only assume the book be as convolute a the subsequent movie . it be not anywhere near an accurate picture of an individual fall into insanity while it be not think provoke while it be not hitchcockian in any way while and turn into a farce when the main character either physically or unconsciously supposedly travel to hong kong and where he repeatedly rid the ferry between hong kong to kowloon a if search for something . the end scene be equally ridiculous and as well a not think out and and remind me of a very young and untalented and unsophisticated director and who think he be an artist . i say unfortunately in my summary line above because this could have be a brilliant story of loss of identity and and subsequent fall into insanity and and tell in such a way a to not have any neat conclusion and but carry the viewer along for the ride . this movie attempt to challenge the viewer and but seem to have forget how to tell a story . even the insane have moment of clarity and which this movie cloud by be obtuse and simplistic . it a shame to have waste two brilliant actor and their brilliant performance with such a terrible script and and by association and an amateurish and clumsy interpretation by the director or novelist and proving that a novelist should not write the screenplay and and not direct the finished product .