TimeRiders

Liam O'Connor should have died at sea in 1912.
Maddy Carter should have died on a plane in 2010.
Sal Vikram should have died in a fire in 2029.
But all three have been given a second chance - to work for an agency that no-one knows exists. Its purpose - to prevent time travel destroying history . . .
When Maddy mistakenly opens a time window where and when she shouldn't have, Liam is marooned sixty-five million years ago in the hunting ground of a deadly - and until now - undiscovered species of predator.
Can Liam make contact with Maddy and Sal before he's torn to pieces by dinosaurs - and without endangering history so much that the world is overtaken by a terrifying new reality?