‘The Flash’ Season 3 Spoilers: Barry Introduces Julian To Earth-2 In Episode 13 Trailer

Julian (Tom Felton) learns about Earth-2 in Season 3, episode 13 of “The Flash.”

In the trailer for the episode, Barry (Grant Gustin) seemingly tries to recruit Julian to join him on a rescue mission in Earth-2. “A friend is lost on a parallel Earth and we’re gonna go get him back,” Barry tells his fellow CSI at Central City Police Department.