This was a great middle grade. I really liked the main character and her drive. I liked how curious and how smart she was. I loved getting to know her and her friends. I also find the whole mystery plot quite interesting and it kept me on my toes. I didn't really see any of it coming. I also really liked the side characters and the blooming friendship.
I just thought it was a really solid story. It was well written and it made me want more from these characters and this world.

We are fans of the Pinna original podcast, and were really excited to get a chance to read an e-arc thanks to NetGalley and the publisher. I think this book is going to appeal to older children, but the things my younger boys like about the podcast (fast pace, lots of dialogue, a mystery that is quickly solved) were lacking in the beginning of this book. It definitely started slower than we expected, but it still has a lot going for it. I am curious why there was a change in author from the podcast to the chapter book, and that may be why we noticed a difference as readers. I will look forward to more Opal Watson books and hope that podcasts and books that connect like this are going to be a standard in the future. My kids love podcasts!

Opal loves helping friends and family find answers to problems, and now her friend Madison says she can hear noises in her bathroom wall. At the same time Jesse, a contractor, is in charge of renovations in their building, and If they aren’t done in time the building will be sold and possibly torn down. As Opal investigates the noises she finds more residents hear noises, and is someone sabotaging the renovations? Then a secret room is found. Does Opal find the source of the noises? What happens when the owner of the building comes by to check on the renovations and sees a lack of progress? Will the building be saved?
Thank you to Netgalley and the publisher for an eARC of this book. All opinions are my own.