check one reply above u, he is telling its buggedif you avoid to fight back Gavin and punch Astrid's father in library (as they are bugging) and reply that you felt good when the murderer asks you how you feel for kill the cop I think you can do it. Also fight back Brian everytime you have the chance . At least for me it worked - I just follow the suggestions from the post of a member here but I'm to lazy to find it now I believe somewhere in the last 10 pages of this thread