Best. Twist. Ever.

Going into this episode, fans were skeptical of how Castle was going to end up at the center of a murder investigation. Never did it cross my mind that it would be because of 3XK. This character has been incredible since his first mention back in Castle Season 3.

The Return of Creepy. "Probable Cause” focused on the murder of a young girl who had been strangled and tied up against the ceiling. Not only was this a creepy scene, it was very detailed. 

It started with Castle’s fingerprints on a door knob. This could have easily been a mistake. But once the jewelry video showed up, as well as the bag in Castle’s apartment, things got shady. Am I the only one that thought something could have been up with Alexis? She showed up that day to do laundry and left pretty quickly. 

Secrets Out. Because of the situation, Ryan was forced to spill the beans to Espo about the Castle/Beckett relationship. Kate headed over to Lanie’s to tell her herself. Love that the important people in their lives are now clued in on the situation. Now that this tension filled episode is gone, they can start making jokes about these two.

3XK. It is no secret that the Triple Killer episode is my absolute favorite. It kept you on your toes the entire time and made your heart jump. Somehow, two seasons later, this same character can still bring the same reaction. Jerry Tyson reappeared to ruin Castle and Beckett’s life. From the looks of the end of the episode, he will be back to do it again. I say, bring him on. My stomach completely jumped when their car was hit on that bridge. I love when Castle does serious drama. 

Caskett is Strong. These two work in pretty much every way. They are great co-workers, great friends, great in a relationship. And most of all, they are great partners. Castle and Beckett are extremely enjoyable to watch, especially in an episode like this one. Hats off to Nathan Fillion and Stana Katic for continuing to kill it week in and week out.

After Thoughts:

• The Richard Castle lookalike was pretty crazy!
• Gates is slowly joining team Castle. Love it!
• Who else wishes they could have seen Lanie’s reaction to Beckett telling her about her relationship?
• When will 3XK show up again? November Sweeps? Season finale time?
• How serious looking was Castle shooting that gun? Same goes for Beckett. They both were ready to protect the one they love.

This episode was a home run. Andrew Marlowe - you have done it again. “Probable Cause” was an exciting hour. What did you think, TV Fanatics? Did you love it, too Sound off in the comments and let us know your opinions on the installment. And check back for the official TV Fanatic Castle Round Table later in the week as you hit up the Castle quotes page for some intense lines from the great Richard Castle.

Until next time, Castle fans.