Rise of the Teenage Mutant Ninja Turtles Season 1 Episode 35

The Turtles plumb the depths of a mysterious hidden library in search of a way to rescue Mayhem from April’s mirror. While trying to be quiet, they must also evade not having a sound heard by the Bat Librarian’s Hush-Bats and contend with the Foot Lieutenant and Foot Brute.

Episode Title: Mystic Library

Air Date: 2019-06-29