Emily Blunt is in talks to star in the DreamWorks adaptation of “The Girl on the Train.”

Tate Taylor has signed on to direct Erin Cressida’s script, which is based on Paula Hawkins’ hugely popular novel.

The story follows Rachel, a woman devastated by her recent divorce who spends her commute fantasizing about a seemingly perfect couple who lives in a house that her train passes every day. One morning, she sees something shocking there and becomes entangled in a mystery.

Marc Platt will produce the film, while Jared LeBoff of Marc Platt Productions will serve as executive producer. DreamWorks acquired the rights to “The Girl on the Train” in 2014 prior to its publication.

“The Girl on the Train” is the fastest-selling adult novel in history, having sold more than two million copies in the U.S. alone since it was published in January by Riverhead Books. It landed in the top spot on the New York Times best sellers list in its first week of eligibility and has remained there for 18 weeks straight.

Blunt is currently filming “The Huntsman” opposite Chris Hemsworth and Charlize Theron. She will appear in the Lionsgate thriller “Sicario” this fall. Blunt is repped by CAA and attorney David Weber.