The Girl on the Train trailer- what happened in the tunnel?
Naturally a film adaptation was fast tracked and it's going to be in cinemas less than two years after the book arrived in January 2015. It even has a hugely impressive cast including Emily Blunt, Luke Evans, Haley Bennet, Justin Theroux and Alison Janney.
The full trailer dives deeper into the story of this psychological thriller. There will be twists and turns.
