P7 chose forensic science for a short pupil choice topic. Today they used a method that real forensic scientists use to separate and analyse chemical substances called chromatography. They had to decide who shot Mr Burns (Simpsons!) by analysing the dyes in various black marker pens and comparing them with the original note found at the crime scene. P7 worked out that Homer was guilty! Look at the photos of these forensic scientists at work and see their chromatograms!