At first glance, it seems like a movie you’ve seen a dozen times over the past three years: a woman goes missing, her friends and husband search desperately for her — but maybe are complicit in the disappearance? — and with each plot twist, you’re second-guessing every theory you’ve developed in the past 10 minutes. It’s deliciously warped, but after the success of Gone Girl and Girl On The Train, you can’t help but wonder if the world needs another upper-class-suburban-woman-gone-mad story. Or if Blake Lively and Anna Kendrick were two years too late to this train.

But A Simple Favor is so much more than a mind-twisting thriller. It is that, sure, but there’s also a biting, satirical dark comedy to it. Kendrick’s a peppy stay-at-home mommy vlogger, who obsesses over being likable, whereas Lively’s the archetype of the Cool Girl that even Gone Girl’s author, Gillian Flynn, skewered in her hit book. She’s the edgy girl women dream of being, who takes zero apologies and has a dark side so twisted you find yourself holding your breath with every scene she’s in, unsure of whether to be delighted or disturbed by her.

Lively mentioned during a talk show that while filming the movie, she never knew whether each day on set would be more of a comedy or a thriller; the movie seemed to walk the line between the two worlds. Sometimes it succeeds, sometimes it’s so deranged it’s just a little too out-there, but that’s the point. It’s a send-up of every successful-woman-next-door-gone-missing thriller, and the whole trend that it spawned. It celebrates and relishes in the drama of the genre, yet it’s self-aware enough to lampoon it.

Simply put, A Simple Favor has all the markings of a cult film. It may not get much attention at its initial release, but you can expect its following to grow over the next few years.