The Boss is back... and he's brought his Big Brother with him!

With his hidden microphones and numbered gang members, the devious criminal mastermind known only as "the Boss" has broken out of prison and has been working hard behind the scenes to topple the financial institutions of the world.

His plan appears to have something to do with computers. And possibly potatoes. In any case, it's up to super sleuth Agaton Sax - along with Aunt Matilda and the long-suffering Inspector Lispington - to stop them the criminals their tracks... if they can.

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.