Other mistake: As Roy meets his daughter, he gets out of his car and we see the car door left open as he runs towards her. Near the end of their conversation, the camera focuses on Roy, and through the space between his body and right arm, you can see the side view mirror indicating the door is now shut without anyone touching it. (00:26:50)
Other mistake: Throughout the movie Roy buys Tareyton cigarettes, but if you watch closely he smokes "Kool" cigarettes, easily identified by the gold label.
Answer: Angela was working with Frank the whole time, she wasn't actually his daughter. Roy's shrink (Dr. Klein) & Chuck Frechette (the money laundering guy) were in on the con as well.
kimmyd
If Chuck was also in on the con then why was Frank so beaten up? And why would they bring up the whole talk about the ashtray from the gift store and how the camera in there had seen Angela if Chuck was already supposed to know about it all?
Their whole plan was to get his vault password, how to get it? By making everything looks real. The death of Chuck -> Roy says he is the one who killed him -> His "daughter" is running because she is the main suspect -> Roy gives his password to the shrink so he can give it to his "daughter" That means Chuck, Frank, Angela, The fake police men, and the shrink are working together.