A BLAST FROM THE PAST — Stephen and his fellow Ultra trainees are given a test by Jedikiah to see who is worthy of becoming an Ultra agent, but not everyone is happy to work as a team. Cara is faced with a mysterious visitor from her past. Russell is sent on a dangerous recon mission that could force a clash between Tomorrow People groups. Meanwhile, John works with a new break-out. Madeleine Mantock also stars. Nick Copus directed the episode written by Nicholas Wootton and Ray Utarnachit.