First published 2012
Amy and Dan Cahill face their darkest hour yet. Seven family members remain in captivity, held by the shadowy Vespers who strike from hiding. The siblings have battled this ruthless organization before, but now they confront a devastating truth: someone in their inner circle works for the enemy. A mole has infiltrated the Cahill family. This betrayer feeds information to the Vespers, making each rescue attempt more dangerous. Amy and Dan must identify the traitor quickly. Another hostage will die if they fail. The clock runs down as the thirteen-year-old Dan and his older sister Amy sift through their closest allies. Anyone could be the spy. Friends become suspects. Trust becomes a luxury they cannot afford. The Vespers have struck at the heart of what the Cahills value most: their bonds with each other. Amy and Dan race against time in this fifth installment of the Cahills vs. Vespers series. They must separate loyal family from deadly enemy before the betrayer destroys them from within.
Genres: adventure, mystery, contemporary, thriller, action
Vibes: fast-paced, suspenseful, thought-provoking
Tropes: enemies-to-lovers, found-family
Setting: Cahill Family
Period: Contemporary
190 pages · Hardcover · Scholastic Inc.
Content warnings: violence