Realising that someone onboard may be working with the hackers, Joe turns his attention to his fellow passengers, whilst Abby stuns her colleagues by taking the train off the mainline.
Alexandra Roach
Abby Aysgarth
Sharon Small
Liz Draycott
James Cosmo
Fraser Warren
David Threlfall
Paul Peveril
Daniel Cahill
Danny Geoghan
Lois Chimimba
Erin Connolly
Sharon Rooney
Yas Brown
Ruth Madeley
Chrissy Doolan
Katie Leung
Rachel Li
Leah MacRae
Sophie Warren
Scott Reid
Billy McCloud
Pamela Nomvete
Nicola Miller
Parth Thakerar
Saj Sidhu
Remy Beasley
Meg Hooton
Jonjo O'Neill
Mark Hudson
