WELCOME TO LAKE GRIMTON.

DON’T FALL IN!

Andy Wagner is ready for a comeback. He and his friends solved one of Infinity Point’s greatest mysteries, and for a while, they were local heroes. Now the excitement has faded, and he’s starting to worry that his best adventure is behind him … until a boat tour sends him tumbling into Lake Grimton, where something enormous moves beneath the surface.

Grimmy, the town’s legendary lake monster, hasn’t been seen in over a century. The old stories describe him as a gentle giant, and the townspeople love him. The souvenir shops really love him. But as Andy and his friends investigate his return, they uncover an astonishing truth.

Grimmy is no gentle giant.
He’s dangerous. So is his secret.

An old enemy wants that secret—and if he gets it, countless lives could be ruined. To stop him, Andy must unravel a mystery that has fooled generations … and survive a monster that should have never been set free.

Andy wanted a bigger adventure. Now he’s in way over his head.

Packed with humor, puzzles, supernatural danger, and unexpected twists, Cracking Monsters continues The Uncrackables, a fast-paced middle-grade mystery-adventure series for fans of Gordon Korman’s Masterminds, James Ponti’s The Sherlock Society, and The 39 Clues.