A girl rushes through the streets of Delft. She has important packages to deliver: letters, guitar strings, precious earrings... and a piece of blue stone called lapis lazuli. It’s for master painter Johannes Vermeer, who will use it to make a deep blue called ultramarine. It’s incredibly expensive, worth more than gold. For an instant, the girl wonders: her brothers and sisters are hungry, maybe she should sell the stone instead...? But after she knocks on Vermeer’s door, he makes her ...

Minako is on holiday with her parents. In Amsterdam, they are staying at a very large hotel in the heart of the city. There are mirrors all over the building. At breakfast, she sees four sad little boys who look exactly the same – oh no, there are only two! One set of twins at breakfast and one set in the mirror. The twins just turned six. Their grandmother got them a dog, but he ran away. Minako decides she’s going to help find him. But how do you find a very small dog in a very large ho...