Uses Caesar shifts, Pigpen, binary, mirror writing, transposition ciphers and more to solve a murder in the maths department! Customisable so that you can add your own departmental members as suspects. Fully prepared worksheets and full answers. Suitable for KS3 and KS4. If you like my resources then please check out The British International School Phuket website: http://www.ibmathsresources.com for maths articles, ideas for gifted and talented students, maths videos and even a school code breaking challenge. We now also have a site - www.schoolcodebreaking.com which students can compete cracking codes with students from around the world. Can your kids make the leaderboard?