Oops! You need to enable JavaScript in your browser to start watching. CITV LEGO Ninjago Kryptarium Prison Blues Series 4 - Episode 8- Animated series. The Ninjas run into an old enemy in prison and attempt to thwart his escape, and Nya finds new hope in an old mech. 15 mins Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share