This is the second Gabby Duran book and I would definitely recommend that you read the first one before this one. It sets the story up and having not read it, I was somewhat confused at the beginning of this book.
Gabby works for a group called A.L.I.E.N., babysitting “unsittable” children,. In this book she is hired to babysit a little troll boy whose parents despise humans. Trolls are also known for stealing things and if you want to get them back, you must answer a riddle. When Gabby's backpack is stolen with her thumbdrive containing her homework by Trymmy, she must risk seeing him outside a babysitting job to get it back. Whild all this is going on, her bitter frenemy Madison Murray is trying to strong-arm her into providing a big-ticket item for the school orchestra’s fundraiser which she is organizing. When her mother finds a rare autographed first edition cookbook, it looks like she is off the hook, but that is not the end of things going wrong for Gabby. Responsible, Gabby takes these unfair situations to heart, beating herself up about not fulfilling obligations before her instinctive knack for giving children what they need saves the day.

This book would be a good story for children in junior grades (late gr. 3 to 6).

I received a copy of this book from Netgalley in exchange for an honest review. ( )