An upcoming episode of Castle will be going back into the past to a time of great violence in New York: the 1970s.

Teen Wolf Star Set to Make Guest Appearance on New Episode?

The upcoming 20th episode of season 6 will be titled That '70s Show, according to a new report by TVLine, which is claiming that the show will be set in '70s New York. It is not clear about what this means for Castle (Nathan Fillion) and Beckett (Stana Katic) but their investigation could have to do with a cold case from a crime committed in the '70s.

That '70s Show does not have a specific premiere date yet, but it will likely air in March or April, based on the current schedule.

Beckett To Be "Killed" in Dangerous Undercover Operation During A Situation Of Mistaken Identity?

Castle has aired 15 episodes thus far in season 6 and is about to air its 16th episode on Monday. The episode is titled Room 147 and features Castle and Beckett investigating a strange pattern of confessions.

Beckett and Castle receive a confession from a young woman who claims to have murdered a struggling actor, which seems like an open-and-shut case until they deduce that she isn't telling the truth.

A second person confesses to the murder with equal conviction that they committed it, causing Castle, Beckett and the team to realize that there must be something greater and more mysterious at work. The episode is set to air on Monday, Feb. 24 at 10 p.m.

Castle season 6 airs Mondays at 10 p.m. on ABC.

Watch a promo for the Room 147 episode of Castle here:

Tags
Castle, Television, ABC