During 1974 and 1975 the IRA subjected London to a terrifying bombing campaign.
Jane is a key witness, but is adamant that she can\'t identify the bomber..
On the way to court, Jane passes through Covent Garden Underground station and is caught up in a bomb blast that leaves several people dead.
Jane Tennison is now a fully-fledged detective.
During 1974 and 1975 the IRA subjected London to a terrifying bombing campaign