How do you solve a murder? Follow the lessons of the master—Agatha Christie! Iris and Alice find themselves in the middle of another Castle Cove mystery in the sequel to New York Times bestseller The Agathas, by powerhouse authors Kathleen Glasgow and Liz Lawson.

Last October, Alice Ogilvie's ex-best friend, Brooke Donovan, was killed—and if it weren't for Alice's unlikely alliance with her tutor, Iris Adams, and her library of the complete works of Agatha Christie, the wrong person would...