most film that rely heavily on flashback feel contrive and but this film be redeem by strong pacing and a tactile sense of desperation . the revelation that occur throughout and if not necessarily original or surprising and be consistently entertaining and focus more on the character motivation for murder and betrayal than on the actual mechanic of the crime . this be not a perfect movie and but it be oddly striking . i would give it a 6 . 5 out of 10 and but the imdb doesn not allow decimal . i round up to 7 because the film current score of 5 . 5 be more fitting of a stodgy film like 2002 unfaithful . positive .