Line Of Duty (S3 E5/6), Thursday 21st April, BBC2

We’re now in the position that we don’t know if anyone in this series is totally innocent; with the Masons rearing their conspiratorial heads, even Hastings is under suspicion. As Dot Cottan gets his bravery award at a black tie dinner (surely a uniformed ceremony would be more appropriate?), Steve Arnott’s face is particularly scrunched up;…