The Tomorrow People 1×04 “Kill Or Be Killed” – When Ultra’s most wanted, Killian McCrane (guest star Jason Dohring, “Veronica Mars”), resurfaces after years of being in hiding, Stephen (Robbie Amell) enlists John’s (Luke Mitchell) help in tracking him down. John reluctantly agrees to help, but changes his mind when he learns that Killian isn’t after Jedikiah (Mark Pellegrino) as everyone suspects. Stephen, wants to help, but Cara (Peyton List) explains that John’s history with Killian, which brings back a flood of memories from John’s past, making him do something he never thought he would do again. Meanwhile, Stephen’s mom (guest star Sarah Clarke) is suspicious of his whereabouts, putting him in an awkward position. Aaron Yoo and Madeleine Mantock also star. Guy Bee directed the episode written by Nicholas Wootton and Alex Katsnelson (#104).