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Time is running out. When hackers send a train hurtling towards death and destruction, can two strangers stop it before the sleeper reaches a grim final destination?
Episode Title:Episode 1
Creator:Nick Leather
Stars:Alex Ferns, Alexandra Roach, Daniel Cahill, David Threlfall, Gabriel Howell, James Cosmo, Joe Cole, Katie Leung, Lois Chimimba, Sharon Small
Networks:BBC One
