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.
Did You Know?
The signs on the screen of Simon's gadget are (inverted) Klingon characters from Star Trek. See more
When Ryan and Esposito rib Castle about believing Simon is a time traveler, Esposito mentions "Doctor Who's sonic screwdriver". If Espo watches the series, as Castle believes, he would know the character is just called "The Doctor". See more
[a man in a hoodie runs past and pushes an old man while getting to the elevator
References The Terminator
Castle Theme Song
Written by Robert Duncan See more