[11] Annika Strandhed is the Detective Inspector heading up the newly-formed, Glasgow-based, Marine Homicide Unit (MHU).
Annika regularly breaks the fourth wall to communicate directly with the audience about aspects of the current case and personal reflections.
In Series 2, after Annika revealed to the audience that Michael McAndrews is Morgan's biological father, she needs to tell him.
As the series progresses, Annika and Michael have to work out how and when they are going to tell Morgan about her father, but after Erin dumps her, they decide to wait.
Clarke has recently transferred from the Border Command, a police drug investigation unit, to try and reboot his career.
He is very goal focused and used to working alone, which clashes with the team environment Annika is trying to foster with the MHU.
Harper joined the team after Tyrone left; she is slowly being trained up and has a motorbike, which Annika isn't keen on when she has to ride it with her.
[3][17] Beacon Arts Centre, Greenock, served as the homicide unit's base, and DI Strandhed's home was located on the banks of Loch Lomond.
[17] The theme music ("Bringing Murder to the Land") was written by Anton Newcombe and Dot Allison.
[18] The Telegraph describes the TV series as "disappointingly pedestrian", recommending that "The show needs to focus less on the clever conceits and more on the plots".
[21] The Killing Times also rated the first episode with 3 stars: "It's great to have Walker back on our screens and although Annika feels a bit light – Mare of Easttown it is most assuredly not – it's still worth a watch".