Line of Duty fans are known to be sleuths when it comes to figuring out the show's many twists and turns, and it appears This Morning may have dropped another clue.Phillip Schofield and Holly Willoughby confirmed they will have a "very exciting guest" coming on next Monday's show following the Line of Duty finale.While they didn't reveal much information, many fans assumed the person in question would be the mysterious "H" - the bent copper whose identity remains a mystery.On this Monday's show, actress Anna Maxwell Martin, who plays DCS Carmichael - one of the prime suspects for H - appeared on the show, leading one fan to point out she wasn't likely to be H."So H can't be Carmichael because she was on yesterday and why would they have her.
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