Viewers think that they have worked out a major plot twist concerning AC-12's newest team member Chloe Bishop inLine of Duty, and we think they might be onto something! Warning, potential spoilers ahead for season six - do not continue if you want to avoid theories!

Taking to Twitter following episode four, plenty of fans have suggested that Chloe, who has seamlessly fitted into the AC-12 team following Kate's departure, isn't exactly who she says she is.