Mondays 10:00 PM on ABC
Watch Castle Season 5 Episode 20 online via TV Fanatic with over 2 options to watch the Castle S5E20 full episode. Affiliates with free and paid streaming include Amazon and iTunes.

Rating: 4.5 / 5.0 (218 Votes)

Episode Details

Castle Season 5 Episode 20: "The Fast and the Furriest"

When a dead woman is found with claw like slash marks, Rick wants to believe Big Foot is the culprit on Castle.

Castle Season 5 Episode 20 Quotes

Vicious, blood thirsty, old folks, is that your theory?


Maybe my apartment's being invaded by some sort of super rat.

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