Could Steph Corbett be ‘H’ in Line of Duty? (Picture: BBC)

Line of Duty fans think they’ve spotted a clue pointing to the identity of ‘H’staring at us in plain sight – on Steph Corbett’s tiles.

In the latest episode from series six, Steve Arnott (Martin Compston) grew closer to John Corbett’s (Stephen Graham) widow, spending the night in her bed two years after her husband was killed by Ryan Pilkington (Gregory Piper).