Tom has been locked into a mysterious box by the organisation hunting him and his wife Claire finds out the motivation of the organisation from Peter. Flashbacks show how Tom and Claire met, the birth of their children and the first manifestations of Hyde.

Cast: James Nesbitt, Gina Bellman, Denis Lawson, Linda Marlowe, Michelle Ryan, Meera Syal, Fenella Woolgar, Matthew Ashforde, Cliff Barry, Adam Burton, Jemma Churchill, Deborah Cornelius, Tony Gardner, Amanda Hale, Matt King