Plot: Timon and Joep are terrified when Gruwel Geertje appears in the garden! But who is Gruwel Geertje, really? Someone has disguised themselves! Timon and Joep are searching for a treasure, but they don't tell Sam and Marjolein. Barry later stumbles upon some metal in the garden, and Sam thinks it might be the treasure! Victor convinces Alfred not to give up