The Book of Invasions is a globe-spanning adventure, a romp through history and mythology, a grudging love story, and an all-in battle against an evil hidden in plain sight. The world is stunned by the inexplicable murder of a dozen climate scientists at a remote research station in Greenland. When twenty-six-year-old Ricky Crowe, sister of a slain researcher, unexpectedly comes into possession of a parchment map found in Greenland's 5,000-year-old ice, she attempts to set aside the demons of her own grief and alcoholism—and a terrifying past that has left her with an eight-inch facial scar—in order to determine whether the map holds a key to her sister's fate. Bringing it to experts at the foundation that funded her sister's research, she sets in motion a race with her new allies to unravel puzzles hidden in tombs in Egypt and Ireland, and in an obscure book of Celtic myth—The Book of Invasions—before the secrets are lost to the ruthless cult that has searched relentlessly for the world-changing evil the map promises since before the pyramids were built.