After Maguire's murder, Rhona tells Jimmy that he was really called Michael Thompson, and was on witness protection. As a result Rhona, Jimmy and Tosh travel to Glasgow, where they learn that Michael was to testify against gangster Arthur McCall, who is not forthcoming in an interview. Jimmy also has to fight off one of McCall's heavies whilst learning that Michael and Leanne - still in a coma - were shot by the same gun. He does meet Glaswegian policewoman Asha Israni, who tells him that Michael met with junior fiscal Brian McDade, and was dead a week later, pointing to McDade as the possible leak. Back on Shetland another important link is established between Michael and Robbie, hastening Jimmy's return to the island.
—don @ minifie-1