This was a great read, and I definitely recommend it to people who like a tad bit of mystery and a bit of action. Warren is a descendant of many Warrens, and as you can tell by the title, he is the 13th in his line. He is currently living with his Uncle in a hotel, and his uncle is about to marry a wife, Warren's aunt. She seems to be good at first, but after Warren's uncle leaves, she's not as she seems. Warren's family has a hidden treasure and Warren and his aunt are both on the look for it. But when things get a bit too harsh with Warren and his aunt, Warren sets out to find the treasure by himself. But what will happen to Warren? Read this nail-biting novel to find out!