Nathan Fillion, Stana Katic Nathan Fillion, Stana Katic

Get your buckets of blood ready, Castle fans!

On Monday's new episode, Castle (Nathan FIllion) and Beckett (Stana Katic) investigate the murder of a high school mean girl at a private school. However, during the course of the investigation, a giddy Castle begins to believe the murderer has telekinetic powers. In other words, Castle believes he and Beckett are dealing with a real-life Carrie situation!

Castle boss talks Beckett's "Cold Feet" and the new wedding date

Dampening Castle's spirits, however, is the fact that the murder took place at one of the private schools Castle was kicked out of as a kid. And it gets worse from there. "He has to go back and revisit his history in a really fun way," creator  Andrew W. Marlowe tells of the episode. "Unbeknownst to him, his nemesis, the crotchety principal, is still running the school, so some great humor comes out of that."As you can see in the exclusive sneak-peek video below, Principal Duncan (

Lost and Justified star Sam Anderson) doesn't have many fond memories of Castle either. In fact, Duncan is so unimpressed with Castle's career ("You're a writer... of sorts," he snipes), he refuses him to call him by his now-famous pen name.Could the embarrassment of the murder in Duncan's hallowed halls give Castle some leverage over Duncan? Check out the clip below to find out.Castle airs Mondays at 10/9c on ABC.