Abby's convinced she knows how to stop the remaining carriages, but with Joe out of contact and almost out of time, is it too late for those hurtling towards the end of the line?
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
