Scott and Jo vs The Martians (Scott and Jo Comedy Mysteries, #2)

Thirteen year old Jo is proud that her parents have decided that she's very responsible. And then her cousin Scott arrives. He says very little, understands electronics, and loves math. Is it at all possible that he is a robot? Jo isn't sure, but Scott makes clear from the beginning that he's a rational atheist. He and Jo share a passion for getting to the bottom of mysteries, so they end up working together, often while arguing.

In Book Two of the series, Scott and Jo confront Martian inva...