A Complete Guide to Reese Witherspoon's Hello Sunshine Book Club Picks

"The Christie Affair" by Nina de Gramont ($13)

• What it's about: Set in 1925, this book draws from real events to tell the fictional story of a woman named Miss Nan O'Dea, who befriends famous mystery writer Agatha Christie and her husband, Archie. But when Nan winds up having an affair with Archie, Agatha's marriage is thrown into chaos and ghosts from Nan's past begin to emerge.
• What Witherspoon says: "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, heartbreak and revenge based on true happenings . . . but here's the twist, it's told through the perspective of her husband's mistress!"