Oooohhh… BBC One’s Line of Duty (2012-2021 maybe sort of) was a bit good wasn’t it? Wasn’t that captivating television? And, even better, turn over to BBC Four at the end and you can enjoy its spiritual predecessor Between the Lines (1992-1994) and appreciate how far the humble long, thin, narrow mark has come on television across the last few decades. A schedule more crammed with lines than any other.