Warning: Full spoilers from the episode follow. Coming off a long hiatus, Teenage Mutant Ninja Turtles returned with another strong episode tapping into classic storylines and characters. This week's "Turtles in Time" introduced us to new versions of Renet Tilly (voiced by The Avengers' Ashley Johnson), Lord Simultaneous (The Prestige's Jim Piddock) and Savanti Romero (The Hobbit's Graham McTavish), while also setting up a new time travel arc (!) for Season 3.