Season 4 Episode 12

Monday’s all-new Castle did not disappoint in the quotes department. The 12th precinct knows firsthand how to handle drama: with a little dollop of good humor.

From a dead sex phone operator to a major rift in Beckett and Castle’s usual M.O., check out the top quotable moments from Castle Season 4, Episode 12, "Dial M for Mayor," below.

10. Castle: Maybe this is exactly what...

One of our favorite things about Castle is how the writers always manage to pull the wool over our eyes. We knew tonight's episode would put Kate and Rick's relationship to the test, but we had absolutely no idea it would involve Johanna Beckett.

In one of the most epic Castle twists of all time, we learn that the mysterious man who receives Montgomery's files in the Season 3 finale is still...

Dial-A-Murder?

It all begins with some mood music and what looks like a saucy sex scene in the back of a car, but ends up with a dead, lifeless body in the back of the car instead. Say it with us: Ewwww.

At the scene, Lanie informs Castle and Beckett that the victim was choked by someone — presumably, a male. Ryan says the vehicle the body was found in belongs to — dum, dum, dum...

There have been so many fun and flirty moments between Richard Castle and Kate Beckett this season that we almost forgot about the sleeping dragon that was awakened in Season 3 — the people behind Johanna Beckett's murder. And suddenly, Gary McCallister's words come to mind: "This is so much bigger than you realize.”

But first, let's talk about how the episode affects our...

Get ready for an all-new episode of ABC's hit show Castle airing tonight, January 16, 2012, at 10 p.m. ET!

In Season 4, Episode 12, "Dial M For Mayor," Rick's good friend Mr. Mayor Weldon is connected to the murder of a 28-year-old woman. While Beckett's ready to explore all leads, Castle is 100 percent certain his lawmaker pal is innocent.

So, did he do it?

We'll have to wait to find out, but...