Reese Witherspoon has exciting literary news marking a new direction for the Oscar-winning actor, producer and founder of her eponymous book club.

Grand Central Publishing announced in October last year that the Legally Blonde and Big Little Lies star is teaming with the bestselling thriller writer and Netflix producer-creator Harlan Coben on a suspense novel, her first work of adult fiction. The book, currently untitled, is scheduled for this fall and is being developed out of an idea that Witherspoon came up with.

“To say I am a fan of Harlan’s body of work is a massive understatement,” Witherspoon said in a statement issued through Grand Central, an imprint of Hachette Book Group. “The fact that he found my idea for this thriller intriguing enough to want to partner with me on it as co-author is a dream becoming a reality. Scheming with Harlan on how to thrill audiences with mysterious characters and complex narrative twists and turns has already been more fun than I can describe. I can’t wait for everyone to read what we have been imagining.”

Coben has sold tens of millions of books worldwide, his notable works including the Myron Bolitar series and such standalone novels as Hold Tight and Fool Me Once, which he helped produce for Netflix. He has praised Witherspoon for her “unrivalled storytelling instincts”.

“Collaborating with Reese has been a pure joy and so creatively rewarding. I could not be more excited about putting this novel out into the world.”

Witherspoon’s latest book club pick is Isola, by Allegra Goodman.