Donatello Makes Time Teenage Mutant Ninja Turtles : Season 4 Episode 23
TV-Y7 USA Network 23m
Aired: October 20th, 1990 @ 12:00 AM EST on USA Network
Professor Lloyd Cycloyd, a crazy scientist who escaped from an institution, accidentally discovers the Turtles' lair. He sees Donatello testing out one of his new inventions, a time stopper.
