Eagle-eyed Line of Duty fans have been excitedly tweeting as they spotted some familiar locations where the series was filmed in Belfast.
Prompting the conversation on Twitter, our very own Eamonn Holmes asked his followers to suggest where some of the scenes from Sunday night's episode were filmed.
The broadcaster who hails from North Belfast tweeted: "So indulge me re # LineOfDuty locations in Belfast. Tate's Avenue with the Phone Box and The Central Library in Royal Avenue popped up again.... but where was The Industrial Estate hijack, The downtown Police Station and the various House visits? Any guesses?"
Fans were quick to respond pointing out familiar locations around the city and some had even spotted stars of the series filming last year.
Line of Duty cast behind-the-scenes in Belfast
Several viewers were pretty sure the industrial estate location was Duncrue, while others thought it was Belfast Harbour Estate.
Although, most viewers seemed to be in agreement that the AC12 HQ was the Invest NI building in the city centre.
Meanwhile, the scene from Sunday night where DS Steve Arnott is at the phonebox on Tate's Avenue, some viewers were convinced that scene wasn't actually filmed there as the phonebox had disappeared.
Fans were also quick to spot that Ted Hastings and his wife were dining out in popular Belfast eatery Stix and Stones.
Did you recognise any of the other locations from last night's episode? Send us your suggestions.
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