The third episode of (S03E03) marks a pivotal shift in the season's narrative, transitioning from the isolated windswept islands to the gritty urban landscape of Glasgow . Directed by Thaddeus O'Sullivan and written by Gaby Chiappe and Robert Murphy , this episode originally aired on February 5, 2016 , on BBC One. Plot Summary: From Shetland to Glasgow

In , the investigation into Michael Maguire’s murder takes DI Jimmy Perez and Tosh away from the islands and into the gritty criminal underworld of Glasgow . Plot Overview