The Guggenheim Mystery - Robin Stevens, Siobhan Dowd

My name is Ted Spark. Three months ago, I solved the mystery of how my cousin Salim disappeared from a pod on the London Eye. This is the story of my second mystery. This summer, I went on holiday to New York, to visit Aunt Gloria and Salim. While I was there, a painting was stolen from the Guggenheim Museum, where Aunt Gloria works. Then Aunt Gloria was blamed for the theft, and I realised just how important it was to find the painting, and discover who really had taken it.