Another great young readers’ series from the creator of Mma Ramotswe, Isabel Dalhousie, Harriet Bean and Akimbo! Max and Maddy Twist have a flair for solving crimes. You might even say it’s in their blood. That’s because their parents once ran a thriving detective agency–until their nemesis, the notorious Professor Claude Sardine, shut them down. But now Max and Maddy are ready to pick up where their parents left off. In Max & Maddy and the Chocolate Money Mystery, a Swiss businessman asks for their help in catching a bank robber. But little do the brother-and-sister detectives expect to find themselves hot on the trail of a gang of . . . St. Bernard dogs. Who can be the dastardly mind behind this evil and cunning plot? The daring duo don their disguises and fly to Switzerland to find out!

When international detectives, Max and Maddy Twist, tackle the bursting balloons mystery, they're on a tough case. Someone wants to sabotage a hot air balloon race across America, and they'll stop at nothing - bursting balloons, stealing sandbags, breaking baskets, and guzzling gas!