A new adventure featuring the most famous Dutch twins! The Kameleon and the Sword of Grutte Pier is the fifth installment in the new Kameleon series, written by M. de Roos. The previous installments in the revamped series were very well received, and not just by longtime Kameleon fans. The new stories about the most famous twins in the Netherlands are completely contemporary, and young readers are thoroughly enjoying the adventures of Hielke and Sietse Klinkhamer. In The Kameleon and the Sword of Grutte Pier, a medieval festival is organized in Lenten, and it centers on the story of the legendary Frisian pirate chieftain Grutte Pier. The museum lends the famous sword of Grutte Pier to Sietse and Hielke's father so he can make a replica in his forge. But then the sword suddenly disappears! Who could have stolen it? The twins set out to solve this mystery...