I knew about this kiss even before I watched the episode. And yeah, it was cool. But what really gripped me was the final scene.
Beckett's sitting in a prison room interrogating the most recent in a long line of criminals she's captured while trying to solve her mother's murder. This guy's working for a boss and he's refusing to talk. In fact, they don't even know his real name. He's a ghost. A dead end. Does that stop Kate? Hell no.
John Doe remains silent. Kate looks around the prison room.
Kate Beckett: I put a lot of people in this place. Some of them want to kill me. Others never been treated so fairly in their lives. So they form this attachment to me. It's like I'm their favorite school teacher. Some of those people might visit you while you're in here. Like the ghosts that visit Scrooge. And after some time with them you might find yourself a changed man. So I will be back here, week after week, to ask you who hired you -- until that miracle occurs.
Love this woman. The determination, the focus, her refusal to be intimidated, her competency on the job. She's got the stuff. She's amazing.