Castle entered the world of horror movies this week, as a victim supposedly died from viewing a DVD and Rick then feared he would suffer the same fate.

On next Monday's "The Wild Rover," meanwhile, Detective Ryan will step into the spotlight.

Expect to learn a lot more about this member of the team, as his history with a Staten Island crime family comes to light and he ends up going undercover in order to expose the latest killer. Look for this to cause some problems with Mrs. Ryan.

And check out the official ABC teaser for this installment of Castle Season 5:

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