Thanks to NetGalley and Simon and Schuster Books for Young Readers for the opportunity to read and review The Fourth Ruby by James R. Hannibal! This sequel to The Lost Property Office finds the Buckles siblings, Jack and Sadie, relaxing by the fireplace. The siblings begin another quest with Gwen while they search for a thief together and the item the thief is after, the fourth ruby. The Mongolian history was interesting to read about and I liked how the author tied it into the Buckles’ lives. Jack continues and is determined to help his father throughout this new adventure even though many dangers are lurking. Fun steampunk mystery! 4 stars.

Since their last adventure a year ago, Jack and Gwen haven't been speaking too much. Jack has been working with another (more advanced) Quartermaster while also keeping another secret... he might be losing his power. It's no wonder Gwen hasn't been talking to him lately.
The book opens with Jack being in the middle of the Hunt (an annual game) and betraying the fact that he can spark. Keeping that secret causes him to get kicked out of the Hunt. Life doesn't get any better after he gets set up for the theft of the Royal Crown jewels. And just like that, Jack, Gwen and even his sister Sophie are off on a trip that will take them to exotic locales.
This book started off both slow and confusing. If you haven't read the first book, I would definitely suggest starting there. It did get better though and I am looking forward to the third book in the series.

Three stars
This book comes out October 1
ARC kindly provided by NetGalley