Pink Cloud - S10-E5
Continuity mistake: Upton finds the young girl in the warehouse and while she is comforting her, the perp sneaks up behind her and knocks her out with a blow to the back of her head. The injury, however, from that point on, is on her forehead.
Continuity mistake: Toward the end of the episode Burgess begins to board the bus looking for the murderer. As she boards she is greeted by the bus driver who is sitting behind the wheel but as she begins to walk down the aisle the driver's seat is empty.
Answer: Because he is a great cop and gets the job done better than anyone.