Agaton Sax faces one of the most challenging cases of his career when a secretive and evil mastermind steals Scotland Yard's Register of Current Criminals from under the very nose of Inspector Joshua Lispington. To get it back, Agaton will need to employ his considerable skill and intellect, as well as overcome fake detectives, masked men, incompetent sailors and a rogue pirate ship. It's just another day in the exciting life of Agaton Sax, Sweden's finest and most inventive detective… The Agaton Sax series of books were first published in Sweden, later being translated into English and printed with illustrations by much-loved artist Quentin Blake (perhaps best known for his work on the books of Roald Dahl). The English translations became immensely popular, achieving the status of the most re-issued mystery & detective series in the history of Nordic children's literature. Now, after many years out of print, Oak Tree Books is proud to publish the entire Agaton Sax series, newly translated and illustrated for the next generation. This new collection includes the eleventh book which has never before been released in English.