The book Rat-Catcher was one of my favorite in this series. In this book, Alpha Force travels to South Africa for a vacation. But what they soon find out is that there is a major drug dealer and kidnapper lurking in the streets. As Paulo goes undercover as a homeless child he meets a girl named Eliza who lost her brother to the kidnapper. Soon Eliza gets abducted and Paulo decides to go with her, so the Alpha Force has to save Paulo as well as stop the drug dealer. Soon they finally get the evidence they need to take down the drug dealer and the police takes him down. But Paulo is still in the hands of the kidnapper and they have to save him. But Paulo escapes with Eliza and he brings Eliza to an orphanage where she is now safe.