In this lower middle-grade mystery, Jin must hunt down the monster he accidentally freed, before it eats his baby brother.

A MONSTER IS LOOSE IN ENGLAND!

And it's kind of Jin's fault that Zilombo got loose.

Jin tracks the monster, but he can't figure out how to get her back into the artifact from which she hatched. Then Jin meets Chief Inspector of Ancient Artifacts A. J. Zauyamakanda-Mizz Z, for short-who has arrived to inspect the artifact. She and Jin team up to find Zilombo.

Joining them is Frankie, Jin's older sister, who has lost their baby brother-and Zilombo is the most likely culprit for his disappearance. Zilombo gains new, frightening powers every time she hatches. Now the monster is cleverer than ever before ... and she likes to eat babies!

Will Jin's baby brother be next on Zilombo's menu? As the monster's powers continue to grow, Jin, Frankie, and Mizz Z must find a way to outsmart Zilombo!