Book excerpt: Cambridge Experience Readers is a graded readers series of original fiction, adapted fiction and non-fiction especially written for teenagers. Twins, Andy and Mary, are in Dublin on a school trip. When Mary discovers that she has been given a forged €20 note, she thinks she knows the identity of the forger. The twins start to investigate, but it soon becomes clear that the forgers know who Andy and Mary are too. This paperback is in American English. Audio recordings of the text are available on our website at: www.cambridge.org/elt/discoveryreaders/ame Cambridge Experience Readers, previously called Cambridge Discovery Readers, get your students hooked on reading.