Plot hole: After Leo and the clerk finish looking up the fingerprints on the computer, the other cop says that the dead girl was dating Roland. When asked about Roland's address, the other cop says that he can probably find it somewhere and leaves the room. Leo is sitting directly in front of the computer that just gave them someone else's address. (00:47:10)
Plot hole: Rollie didn't know if he really killed DeFranco, so the shocking door scene assumes he was still alive and at Mason's, and he would exit before Mason.