Collins brings the Queen of Crime, Agatha Christie, to English language learners. Agatha Christie is the most widely published author of all time and in any language. Now Collins has adapted her famous detective novels for English language learners. These carefully adapted versions are shorter with the language targeted at upper-intermediate learners (CEF level B2). Each reader includes: * Audio with a reading of the adapted story * Helpful notes on characters * Cultural and historical notes relevant to the plot * A glossary of the more difficult words Roger Ackroyd is a man who knows too much. He knows the woman he loved poisoned her first husband. He knows someone was blackmailing her - and now he knows she killed herself. When Roger Ackroyd is found murdered, the famous Belgian detective, Hercule Poirot, is called in to find out who the killer is.