i do not know who direct the movie until the credit when the name scorsese pop up and so i saw the movie without any expectation . i must say i wasn not very impressed . first off the infiltration of costigan into costello gang happen way too fast and wasn not very convincing and just like the infiltration of leo character in gang of new york . mark wahlberg character dignam felt really fake and the kind of language he use be not very likely to be use by someone in his position and same go for baldwin character capt . ellerby . the love triangle drama be just pathetic and why would she date some ex con with drug problem when she already move in with sullivan and a career cop who climb the latter in the department like a sky rocket ( i. e. very unlikely ) . they try to portrait costello a this big time mobster but the way he handle business felt more like a small time gangster and steal pocket change from some corner shop . i haven not see the original infernal affair so i can not say weather or not this be bad and but i would really think so . the only part that surprise me positively be in the end when the other mull show up and blew costigans brain out and i do not expect that one . that kind of woke me up and too bad it be just before the credit .