本讀本榮獲 The Extensive Reading Foundation ★「LLL Award Winner 2011」★
類型：Original Fiction: Adventure（原著小說：探險）
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