Synopsis: The book starts off with Jigsaw describing how men are from Mars and women are from Venus. He notices his sister Hillary very angry with her friend Mary Lou Betts because Mary Lou told a boy that Hillary likes him. Furthermore, Jigsaw's mother also seems to be angry with his father, although neither Jigsaw nor his father has any idea why.
Later, Mila Yeh comes over with news that Reginald Pinkerton Armitage III - the richest kid in town, has started his own detective business, and news has spread that he has the coolest state of the art gadgets for his work. Jigsaw is more worried about Reginald's health than seeing him as a competitor because Jigsaw knows that Reginald cannot handle detective work.
So, he goes over to talk with Reginald, but Reginald doesn't back down. When Athena Lorenzo's mother's pearl earrings are stolen, Athena goes to Reginald to ask him for help. Reginald agrees but Jigsaw knows that Reginald cannot make it on his own. Can Jigsaw help Reginald with the case, as well as solve the mystery to his parent's argument?
Review: Although I liked this book generally, I didn't think it was as good as other books in the series. Even though the main mystery was Athena's mother's missing earrings (with a side mystery of the parent's argument), I thought both the mysteries were solved really quickly without adding more plot to the story. The book focused more on Reginald's gadgets rather than adding more to the plot.
Apart from that, I thought that this book was overall pretty good. I enjoyed the various homophones that were used in this book. The illustrations are amazing and beautifully drawn by Jamie Smith. Some parts of the book were fun to read, such as Reginald fumbling with his own gadgets, but if you are picking up this book to read a good mystery story, I would suggest reading other books in the series.