The Tomorrow People Season 1 Episode 20
A Sort Of Homecoming
Roger wakes up and has just enough time for a reunion with his family before deciding that he needs to go on the run again to keep everyone he cares about safe. The Tomorrow People aren't happy about their leader leaving them again, but ultimately it's Jedikiah who convinces him he can't escape the Founder.
Once Roger learns that Stephen has been put into the Machine he realizes his only choice is to destroy it.
John decides having their leader is more important than Roger's plans. But John's attempts to stop Roger get John caught by the Founder, who sticks him with the serum and takes away his powers.
Meanwhile, Hillary is distraught over nearly getting Stephen killed and decides there's only one way to make things right. Strapping a bomb to herself she makes Astrid call a phone that sets it off, taking her life and that of the Founder.