While we're still reeling from the news that Tatiana Maslany will guest star on Parks and Recreation, ABC has spilled its own fun piece of casting news:

Joshua Gomez - forever beloved by Chuck fans for his role as Morgan - will appear on Castle Season 6 as the suspect in a murder case. Pretty basic, right? Not quite.

According to Entertainment Weekly, Gomez's character will allege that he has been sent, Terminator style, back through time in order to prevent catastrophic events from befalling mankind.

Castle Season 6 kicks off on September 23 and other actors confirmed for guest spots include:

Warren Christie, Glenn Morshower, Yancey Arias, Lisa Edelstein and Antonio Sabato Jr

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