CHANGE YOUR LOCKS: Stalker alert! Detective Montoya illegally entered Barbara’s apartment with the key she never gave her back after they broke up. So. Sketch. I suspected they had a fling with that whole “Does he know you like I know you?” with an implied wink a couple episodes back. I did not suspect that Barbara did, well, does drugs. Seems tame in the grand scheme of “Gotham” crimes, but Montoya did hint she was into other trouble.