LINE Of Duty fans were left shocked this evening as James Nesbitt was introduced as dodgy cop Marcus Thurwell after a top secret casting.
The 56-year-old actor surprised viewers when he appeared in the hit BBC drama - having claimed in February he'd been "snubbed" by creator Jed Mercurio.
The Cold Feet favourite claimed at the time he felt "galled" by the move, as the series is filmed in Northern Ireland, where he is from.
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