Collins brings the Queen of Crime, Agatha Christie, to English language learners. 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 hasadapted her famous detective novels for English language learners. These readers have beencarefully adapted using the Collins COBUILD grading scheme to ensure that the language is at thecorrect level for an intermediate learner. This book is Level 4 in the Collins ELT Readers series. Level4 is equivalent to CEF level B2 with a word count of 20,000 – 26,000 words. Poirot has a new challenge on his hands. The A B C murderer killed Mrs Ascher in Andover, then Betty Barnard in Bexhill, then moved on to Sir Carmichael Clarke in Churston – his pattern is clear.A B C even likes to write to Poirot and tell him where and when the next murder will be. So it should be easy to catch him, shouldn't it?'Let us see, Mr Clever Poirot, just how clever you can be.'