This sequel to the New York Times bestselling book The Mystery of Locked Rooms follows the beloved Deltas as they race to complete the most challenging escape room they've ever faced...and confront their fears in order to save their friendship.
A chilling middle school novel from the #1 New York Times bestselling author of Mystery of Locked Rooms, three kids must discover who—or what—is terrorizing them after receiving an ominous meme on Halloween night.
"A creepy, freaky, fun-as-anything tale."—Chuck Wendig, New York Times bestselling author of Dust & Grim
The instant New York Times bestseller and #1 Kids' Indie Next Pick is now in paperback! Three friends team up to find a hidden treasure in an abandoned 1940’s funhouse in this fast-paced middle grade adventure, perfect for fans of The Goonies and The Inheritance Games.
