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The Christie Affair totally has Witherspoon geeking out — and for good reason. This book is all about the legendary writer and a fictitious interpretation of what happened when she went missing for 11 days, after her husband told her he was leaving her for his mistress. “It was the biggest disappearance of the time,” Witherspoon describes in her announcement video below. The actress was so into the story, she read it “in one sitting.” So, what’s so special about this Nina de Gramont novel? Let’s dive in further.

“True crime aficionados, this book is for you,” the caption to the announcement video begins. “This novel covers the 11 days in 1926 when famed novelist Agatha Christie went missing. That’s right, an unexpected mix of historical fiction and romance, heart break and revenge based on true happenings… but here’s the twist, it’s told through the perspective of her husband’s mistress!” Ok, now we’re really interested.

A post shared by Reese Witherspoon (@reesewitherspoon)

Before you go, click here to see which books you should read based on your last binge-watch.