Murderous Maths: The Secret Life of Codes

Make them, break them and baffle everyone with them! Master the secrets of the world’s most cryptic codes! What’s the secret code for pepperoni pizza? When is a letter a key? How do you make an Enigma machine? Find out in this murderously funny guide to code-making and code-breaking!

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  • Photo of Kjartan Poskitt

    Kjartan Poskitt

    Kjartan lives in York with his wife and four children. He regularly performs at venues all over the country.


    Winner of the 2012 Sheffield Children’s Book Award for Agatha Parrot and the Floating Head.

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