[OneWingedAngel]

Originally Posted by Rei-Lin

Yup it was this: https://www.youtube.com/watch?v=8I0C4YDoFmE

Back to the Sewers, episode 3. The title of the episode is "Something Wicked"

Not quite, it was actually the episode after, "The Engagement Ring" as it dealt with April receiving the wrong ring for her engagement to Casey. Something Wicked was about the turtles going into cyberspace to find Splinter's data.