A potentially deadly, mutant strain of flu has hit the UK. It's up to the North Edinburgh Health Enforcement Team to contain it, by making sure all citizens attend their monthly health check. But now the pandemic's spreading... On Friday, three civil servants leading Virus policy hold a secret meeting at the Museum of Plagues and Pandemics. By Monday, two are dead and one is missing. Can Mona and Bernard of the HET find the missing official, before panic hits the streets?