The author will adapt the book herself for Universal

Sloane Crosley’s tale of Parisian road trips and missing necklaces is coming to the big screen.

Universal has acquired the film rights to The Clasp, with Crosley set to pen the adaptation of her own book. Her debut novel follows three estranged friends searching for a necklace, which disappeared years ago in Nazi-occupied France.

“I’m obviously thrilled to start writing it, mostly because — this is going to sound incredibly hokey, but it’s sincere, which can happen occasionally with me — I miss these people,” Crosley tells EW about tackling the screenplay. “You spend a lot of time with them. You finish writing a book and you think, there’s so much that I would have had them say that I didn’t get the opportunity, just because of the nature of time and space… I feel like it’s a little bit of a reunion in my head, writing the movie.”

Best known for her essay collections I Was Told There’d Be Cake and How Did You Get This Number?, both of which were New York Times bestsellers, Crosley made her fiction debut in October with the release of The Clasp. The novel follows Victor, Kezia, and Nathaniel — three distant college friends on the verge of 30 as they reunite for a friend’s wedding. When the mother of the groom tells Victor about the disappearance of a necklace during World War II, his obsession with finding out what happened to it leads them on a madcap chase through Europe. Their adventure is interwoven with Guy de Maupassant’s classic short story The Necklace.

“There’s a lot of the road trip in France that I’m looking forward to writing,” Crosley says. “I was not looking forward to writing sex scenes in the novel, and I’m only moreso not looking forward to writing them [for the movie].”

For the movie version, Crosley is teaming up with producer Helen Estabrook (Whiplash) and Universal’s vice president of production Sara Scott.

“It’s such a strange experience because these characters already came out in their most natural form, and it’s like — just to get graphic — shovin’ ‘em back into the womb,” Crosley says. “Setting the timer, cooking it on high, and maybe it will come out like a poem! Or a dance! Instead, it’s coming out as a movie.”

The Hollywood Reporter first reported the news.