Particle physicists are almost like detectives – just without the magnifying lenses and weird hats. Both are relying on their powers of deduction to find the culprit who left weird tracks. Which particle was it? Where did it come from? And, if no one really saw it, was it ever really there?

This science show explores the world of detectors, specifically the CMS detector, by following particles through the different layers of the detector. The principle of detection within the main levels is explained using simple experiment and beautiful animations.