Every legend has a beginning ... During 1974 and 1975 the IRA subjected London to a terrifying bombing campaign. In one day alone, they planted seven bombs at locations across central London. Some were defused - some were not. Jane Tennison is now a fully-fledged detective. On the way to court one morning, Jane passes through Covent Garden Underground station and is caught up in a bomb blast that leaves several people dead, and many horribly injured....