Notes from the Underground - Part One

S01E13 - Airdate: 2003-05-10

Runtime: 30 min

When Don's examination of some mysterious crystals attracts the attention of a subterranean monster, the Turtles underground exploration unearths a Foot Genetics Lab! A video record of strange experiments reveals more of Shredder's mysterious agenda, but when the mutants attack, the boys better watch out, or it's everybody out of the gene pool!

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Episode details and rating from TVmaze.