Time Will Tell Castle : Season 6 Episode 5
TV-14 ABC 43m int(0)
Aired: October 21st, 2013 @ 9:00 PM EST on ABC
A grisly murder investigation leads Castle and Beckett to a suspect who claims he's traveled back in time to stop terrible events from unfolding, events that will change the course of human history. Is he simply a deluded killer, or is it possible that he's telling the truth?