Emily Blunt Witnesses a Crime in First ‘Girl on the Train’ Trailer (Video)

Tate Taylor directed the adaptation of Paula Hawkins’ thriller novel, which co-stars Haley Bennett and Rebecca Ferguson

The first trailer for “The Girl on the Train” shows Emily Blunt witnessing — or possibly committing — a serious crime.

Blunt plays Rachel Watson, who witnesses the mysterious disappearance of a woman while on her commute. Allison Janney plays an investigator who connects Rachel to the missing blonde, named Megan Atwell (Haley Bennett). It turns out Megan is the nanny for Rachel’s ex-husband (Justin Theroux) — and he seems awfully chummy with his hired help. Did Rachel kill the nanny?

Tate Taylor adapted the best-selling thriller novel by Paula Hawkins.

The trailer premiered earlier this month at CinemaCon in Las Vegas. Taylor introduced the trailer and joked, “I don’t think any beauty campaigns are coming Emily’s way after this.”

“The Girl on the Train” co-stars Luke Evans, Laura Prepon, Edgar Ramirez and Lisa Kudrow, and will roll into theaters on Oct. 7.

Will the film be as good as David Fincher‘s similarly twisty “Gone Girl?” Watch the trailer above and let us know what you think in the comments section below.