Cambridge Experience Readers is an award-winning series of graded readers including original fiction, adapted fiction and non-fiction especially written for teenagers. Further adventures for twins Andy and Mary (A Little Trouble in Amsterdam, Level 2). This time Andy and Mary, are away with their father in the beautiful Yorkshire Dales in the UK. After discovering a locked door in a supposedly abandoned mine, Mary's curiosity is aroused. What is someone hiding in the mine? And who is the man watching them through the binoculars? This paperback is in British English. Download the complete audio recording of this title and additional classroom resources at cambridge.org/experience-readers Cambridge Experience Readers get teenagers hooked on reading.