You will Watch TMNT Season 1 Episode 14 online for free episodes with HQ / high quality. Stream cartoons TMNT 114 Notes from the Underground, Part 2 Inside the Foot Genetics lab, the Turtles learn of past experiments that turned human subjects into monsters. The brothers soon encounter a group of these creatures who are at first hostile, but eventually become allies. The Turtles now find themselves helping these creatures evade the attacks of similar, but mindless monsters. This new partnership takes the Turtles deeper into the seemingly haunted catacombs, where creatures, and later Donatello, have disappeared. Underground city makes its first appearance in the show.