The trailer for 2015’s biggest book, The Girl on the Train, is finally here — and with eerie voice-overs, quick cuts, and a chilling Kanye West remix, it’s just as creepy as we’d hoped.

The Girl on the Train centers on an unstable divorcée, Rachel (Emily Blunt), who involves herself in the disappearance and murder of a woman named Megan Hipwell (Haley Bennett). By going to the police based on something she thinks she saw on the train, Rachel, too, becomes a suspect in the case.

It gets even more complicated: Megan and her husband Scott (Luke Evans) live next-door to Rachel’s ex-husband and his new wife — and Rachel’s been watching both houses from the train for a long time.

Here are our favorite parts from this compulsively watchable trailer, and what clues they give us about the film:

1. Rachel is already desperately involved


When she sees something out the window, Rachel doesn’t just gaze ahead curiously: She seems to lose her breath and is up and running in an instant, trying to keep whatever she sees in her view. This is more than just people-watching — Rachel is clearly invested in these peoples’ lives.

2. Megan Hipwell is the trailer’s undeniable star


It’s not hard to see how Megan captivated Rachel from afar: Between Megan’s mysterious voice-over (“It’s like having a secret, and nobody but me knows I’m doing it,” she divulges), and seductive shots of her with Justin Theroux’s Tom and Luke Evans’ Scott, Megan seems to be in control of her life in a way that the alcohol-dependent Rachel isn’t. As a creeping, slowed-down remix of Kanye West’s “Heartless” plays in the background, we get a chilling portrait of a complex, unknown woman: And when the line “a woman so heartless” queues up with this shot of Megan’s dead-eyed stare as a faceless man nuzzles her neck, how can anyone not get goosebumps?

3. Everyone looks like a suspect


Especially the film’s darkly handsome men: Was Megan’s husband, Scott (above), involved? What about Tom (below)? The way they brood and stare in these shots could mean anything from confusion to cold calculation to guilt. They also look just enough alike in shadows that it’s hard to tell who’s who — making everything seem even more suspicious.


4. The audience gets to be voyeurs, too — just like Rachel


Not only is our heroine (or villain?) peering into the windows of houses from her seat on the train, but so are we, as the audience. Just like the experience of reading the book, it gives us a chance to step into Rachel’s shoes and wonder, “If I thought I saw something, would I say something?”

5. Everyone seems like a victim, and everyone seems like a suspect


Megan and Tom’s new wife, Anna (Rebecca Ferguson) are both blonde, so this shot — of a hand grabbing a fistful of blonde hair and yanking the woman’s head back — could involve either one of them. And since we don’t know whose hand is doing the yanking, there’s another mystery there, too.

6. Allison Janney’s detective isn’t someone to mess with


In just a few brief shots, it’s already clear Janney’s detective character is not on Rachel’s side. When Rachel says she went to visit her husband, Janney is quick to correct her: “You mean your ex-husband.” Later, she asks Rachel point-blank, “Did you murder Megan Hipwell?” Rachel says no, but…

7. Even Rachel doesn’t know what she did (or didn’t do)


Rachel says in voice-over that she has chunks of time missing from her memory, and when a man — likely psychiatrist Kamal Abdic (Edgar Ramirez) — asks Rachel, “Why are you here?” she whispers, crying, “Because I’m afraid of myself.”

The Girl on the Train rolls into theaters this October.

The Girl on the Train
  • Movie
  • 110 minutes