New series 1/4. An infectious disease from a Liverpool hospital threatens to spread to mainland Europe and three people are given the chance to run their country during this major crisis. Guided by Gavin Hewitt, they will be helped by three experts: Air Marshal Sir Tim Garden advises on military issues; Amanda Platell, communication strategy; and former police and intelligence officer Charles Shoebridge, emergency services response. Will there be a potential prime minister among the contestants?

Digital viewers can use the red button on their handsets to discover how well they'd cope under the same pressure. See how the experts reacted on BBC4 at 10pm. [web address removed]