The Last Kids on Earth and the Nightmare King

In the third book of the New York Times bestselling series, Jack Sullivan and his friends June, Quint, and Dirk, are back to fight the Nightmare King. They've got cool weapons, superpowers, and the ability to drive in post-apocalyptic, monster-ridden Wakefield. But the Nightmare King is no ordinary villain. He's a master of disguise, and he's hiding in plain sight, waiting to unleash a nightmarish plan to end the world. Jack and his friends must defeat him before it's too late.