The previous season of the serialized cop drama was a ratings smash on the BBC, with the finale in May the most-watched program of the year so far in the U.K., garnering 13.7 million viewers. AMC Networks’ streamer, Acorn, has the U.S. rights.
Macdonald’s film credits include “Trainspotting,” “No Country for Old Men,” and this year’s Tiff title “Dirt Music.” On TV she recently appeared in the BBC and Netflix co-production “Giri/Haji,” from “Chernobyl” producer Sister.
In the upcoming sixth season of “Line of Duty” she will star alongside series regulars Martin Compston, Vicky McClure and Adrian Dunbar, all of whom are confirmed to return. ITV-owned World Productions makes the show, which is distributed by Kew Media.
Macdonald will play a senior cop called Joanne Davidson. Her