Line Of Duty series six is set to reach its showstopping finale on Sunday, with AC-12 desperate to solve the mystery of the elusive fourth man, H .
And fans of the hit BBC crime show have stumbled across yet another shock theory that links John Corbett s widow Steph to dodgy Marcus Thurwell - who was presumably found dead in the last episode.
Amid speculation that Thurwell (played by James Nesbitt) is alive and well, Line Of Duty have seemingly found a connection between the characters, with some believing the bent cop in hiding in Steph s (Amy De Bhrún) Attic.