When did Castle Season 5 Episode 20 air?
Castle Season 5 Episode 20 aired on April 15, 2013.


A whole new chapter in crime solving.
After a serial killer imitates the plots of his novels, successful mystery novelist Richard "Rick" Castle receives permission from the Mayor of New York City to tag along with an NYPD homicide investigation team for research purposes.

When Castle and Beckett find giant footprints at the site of a vicious murder, the team is forced to confront the unlikely theory that Bigfoot is the killer. But as they trek into the world of primate research, big game hunting and mythological creatures, they realize that finding the man (or beast) responsible may put them on the endangered species list.
Direct answers for episode-level questions and details.
Castle Season 5 Episode 20 aired on April 15, 2013.
This episode runs for approximately 44 minutes.
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