The six-part series, produced by Black Camel Pictures, is based on the Radio 4 drama written by Nick Walker. 

Nicola Walker will take on the role of DI Annika Strandhed. Known for being quick-witted and mysterious, Strandhed is the new head of a specialist Marine Homicide Unit, which investigates the brutal and bewildering murders that are discovered in the waterways of Scotland. 

Strandhed invites the audience into her world by breaking the fourth wall and revealing her thoughts on the cases and her own life. 

She also has to juggle her talented but eccentric team and her bright and complex teenage daughter. 

Nicola Walker said: “Annika navigates the world, her work and her home life in fabulously unique and unusual ways and I can’t wait to see her come to life in Scotland.”

UKTV drama commissioner Philippa Collie Cousins commented: “Our new detective series Annika is a breath of fresh air: a whip smart detective, great cases and the glorious Scottish scenery. 

“Nicola Walker has been integral in helping us develop her character, creating a maverick female detective who not only has Norwegian ancestry, but is dryly funny, a chaotic parent and a fish out of water.”

Annika is due to air on Alibi in 2021, with further casting to be announced at a later date.