P.K. Pinkerton and the Pistol-packing Widows by Caroline Lawrence

This book is a 2014 release and is the third book in the series. PK lives in the Old West and is a twelve-year-old detective.  He's also half Indian which creates some problems. He's hired by a woman to follow her beloved to a conference in Carson. She thinks he's cheating on her, and it turns out the man is actually PK's mentor, Jace. PK disguises himself as a blind, old woman, a stenographer's cousin, and other types of characters. He discovers a plan that will make people millions of dollars, but someone is willing to kill for it. PK becomes suspicious of the woman who hired him, and his Jace's life may be in danger. It turns out, PK's life is in danger too!

I have not read the first two books in the series, but it didn't seem to matter. The politics of passing new laws is a large part of the plot, so it won't appeal to all readers. It didn't seem to have a clear, main conflict, so I wasn't always sure where the plot was headed. The murders, new laws, and Jace were equally important at different times. I most enjoyed PK's disguises, and the fact he didn't know everything. The author did a nice job of letting readers get to know PK's character. The murders added more suspense to the plot, and PK revealed a secret about himself in order to save his life.