“A Sort of Homecoming” is episode twenty of season one of The Tomorrow People.
In the previous episode, “Modus Vivendi”, Stephen and Jedikiah had successfully brought Stephen’s father, and Jedikiah’s brother, Roger back to life, although he was still unconscious. Now, he is up and around again (and rather oddly capable despite just having a bullet removed from his chest. Weird healing that) and many of the Tomorrow People are rather disappointed when he doesn’t immediately whisk them away to the Refuge.
As expected, two people who Stephen had decided to trust unreservedly, the Founder and Hillary, betrayed him. In Hillary’s case, though, it seems to be done from genuine concern for Stephen. The Founder simple wants to kill off humanity.