Justin Theroux in Talks to Board 'Girl on the Train' (Exclusive)

THR Justin Theroux - H 2015
Austin Hargrave

THR Justin Theroux - H 2015

Emily Blunt, Jared Leto and Rebecca Ferguson are starring in the adaptation of Paula Hawkins' best-selling novel.

The Girl on the Train, DreamWorks' adaptation of the hit book, is adding Justin Theroux to the cast. The actor is in negotiations to step into the suit that was to be worn by Chris Evans, whose deal never took due to a scheduling issue.

Emily Blunt, Rebecca Ferguson, Jared Leto, Haley Bennett and Edgar Ramirez are all attached to the film. Blunt plays a troubled woman (an alcoholic whose husband left her for his mistress) who becomes fascinated by a seemingly perfect couple whose home she passes while riding the train. But after she thinks she witnesses a murder, she begins to realize that she may have been involved in the crime.

Theroux will play Tom, the woman's ex-husband.

Paula Hawkins' best-seller hit shelves in January 2015 and had sold more than 3 million copies in the U.S. alone by August.

Marc Platt is producing the film, which will be executive produced by Jared LeBoff and Celia Costas. The Help helmer Tate Taylor is directing from a script by Erin Cressida Wilson.

Theroux stars on HBO’s The Leftovers, now airing its second season. His acting credits include Wanderlust and Your Highness, and he wrote the screenplays for Rock of Ages and the upcoming Zoolander 2. He’s repped by CAA, Brillstein and Felker Toczek.