It's one corner, beloved author and wisecracker, Rick Castle!

In another corner, new character and sharp detective, Tom Demming!

Ding! Ding! Let the battle for Kate Beckett's attention and affection start in earned on Monday night, as the Castle episode "Overkill" forces Castle to work with Demming. As the photos below depict, this makes him privy to a few sights he could do without:

There is also a case to be solved, of course. Watch a clip from the episode below to see how Castle knows, or at least knows of, the victim.

[video url="http://www.tvfanatic.com/videos/overkill-clip/" title="Overkill Clip"] [/video]

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.