Looks like our hostage taker has a gun in one hand and an inhaler in the other. That could make things even more interesting.

It appears there's another police officer on this train. Will she and Javi be able to team up to take the hostage taker down?

Things look pretty tense in that subway. We hope that Castle, Beckett and Ryan are working behind the scenes to help save them.

The team from the 12th precinct is on the case, hard at work even during the holiday season.

Now that Kate's so happily married, maybe she'll have some advice she can share with Esposito about his relationship with Lanie.

Not to be left out of a murder investigation, Castle's found a way to work with Beckett. He's gotten his Private Investigator's license.

We expect Ryan to have Castle's back, but can we expect the same from Javi? Esposito doesn't always take Castle's side.

Oh good. We get to see Esposito in the spacesuit too. But where's Ryan? And wouldn't you just pay to see Capt. Gates in there too?

The Esposito and Ryan moment of the season may have been their rendition of "Get Lucky" for the NYPD talent show. We only wish we could have seen the whole thing in "Habeas Corpse"

It isn't often that we get to see everyone from Castle dressed up and enjoying an evening together. They certainly look to be having a wonderful night.

An investigation into a vampire fetish community eventually wrapped up with Rick Castle throwing an epic Halloween bash for all of his friends. Castle actually wore two costumes in Castle Season 2 Episode 6, “Vampire Weekend” The first was from Nathan Fillion’s cult favorite Firefly character Capt. Mal Reynolds but for the actual party he dressed as one of his favorite authors, Edgar Allen Poe. Our favorites were Lanie as Cat Woman and Martha as Cruella de Vil.

Esposito's ex may be involved in the death of an armored-car driver on Castle. "Heartbreaker" is the 16th episode of the show's eighth season.