When police detective Ron Craven (Bob Peck) witnesses the murder of his environmental activist daughter (Joanne Whalley), he vows to track down her killer. Little does he know, however, that the trail will lead straight to the heart of Britain's nuclear power industry. The suspense ratchets ever upward in this award-winning BBC miniseries, as Craven finds himself smack in the middle of a top secret government project. Joe Don Baker co-stars.