Stunning illustrations and comprehension activities throughout the book aid students' understanding and encourage independent learning. The accompanying website features a wealth of free online teaching resources, plus extra support for students. Andy and Mary are twins. During the school holidays, they accompany their mother on a business trip to Amsterdam. Andy and Mary witness what they believe to be two criminals hiding a painting from an art robbery. But they can't prove anything and nobody will believe them. This is an American English version of the title. The pack includes CD-ROM/Audio CD with vocabulary games and a complete audio recording.