First you learned to count. Wasn't that exciting? Then you found out how to do sums. Gosh! Now get ready for murderous maths! It really is dead funny, dead interesting and, best of all, it's got no nasty exercises and no boring sums! In this dangerously different guide you'll meet one finger jimmy, chainsaw charlie and their ghastly gangster friends, who are living proof that maths really can be murderous. Find out how maths could help you rescue someone in deadly peril ,how not to shoot yourself with a cannon, and meet some famous mathematicians who were really hard (and even some who were murdered). If you want to be in the know, get the knowledge!