Another mystery to solve.  You need to download the PDF.  If you have a printer, it might be a good idea to print off the page with all of the suspects so you can cross them off as you eliminate them.  You then need all of your maths skills at the ready.  Work through the questions (covering all different parts of maths) and each answer should get you closer to the solution.  The answer sheets have been provided at the bottom so you can check your work - but, no cheating!

Email us your answer!  Good luck!