New adventure of the most famous Dutch twins! The Kameleon and the sword of Grutte Pier is the fifth part in the new Kameleon series, written by M. de Roos. The previous parts of the renewed series were very well received, and not only by the old Kameleon fans. The new stories about the most famous twins in the Netherlands are completely contemporary and young readers thoroughly enjoy the adventures of Hielke and Sietse Klinkhamer. In The Kameleon and the sword of Grutte Pier a medieval festival is organized in Lenten and the story of the legendary Frisian pirate chief Grutte Pier is central. The museum lends the famous sword of Grutte Pier to the father of Sietse and Hielke, so that he can make a replica of it in his forge. But then the sword suddenly disappears! Who could have stolen it? The twins go on an investigation to solve this mystery…