The eerie trailer for last year's best-selling book is here.

It was last year’s best-selling book, now the much-anticipated trailer for The Girl On The Train is here.

Likened to Gone Girl, Paula Hawkin’s TGOTT is a slow-burning thriller centred on the titular character, Rachel, played by Emily Blunt.

The novel, which debuted at number one on The New York Times Bestsellers list, was quickly snapped up by Dreamworks Pictures, who obtained the movie rights in 2014, before the book was even published.

Images via Youtube/Dreamworks Pictures.

When it was announced last year that Blunt would assume the role of Rachel, there was a bit of an uproar about the casting decision. Rachel is described as a 32-year-old alcoholic who is 'puffy', 'sleep deprived' and also 'plain', 'smelly' and 'unattractive'. Not exactly the adjectives we would use when we think of Blunt.

But this is Hollywood. Pretty people sell movies. Rachel, a highly unlikeable character to begin with, obviously needed some freshening up. Blunt's joined alongside ever-brilliant, Allison Janney (Office Riley) and Jennifer Aniston's beau, Justin Theroux, who plays her ex-husband, Tom.

Allison Janney and Justin Theroux. Images via Dreamworks Pictures/Youtube.

The gist of the book  goes a little like this (don't worry, no spoilers here). Rachel, who is literally the girl on the train, was fired from her corporate job yet still rides the train into the city every morning instead of telling her roommate she was let go. Like we said, unlikeable. She turned to drinking after the break down of her marriage to Tom, who has shacked up, and now has a daughter with, his former mistress Anna.

While riding the train, Rachel passes her ex's house every day and becomes obsessed with a young couple that live a few doors down. Then, after a heavy night of drinking, Rachel wakes up bloodied with no memory of the night before.

Whether you loved or loathed the novel, the film is sure to keep you on your toes.

The film is slated for release in Australia on October 7th this year.

Our very own podcast director, Monz, has described the book as one of the 'worst she's ever read'. You can listen to her full review of the novel below.