Feature-length episode of the hard-hitting crime series written by Paul Abbott and Jimmy McGovern, starring Robbie Coltrane as criminal psychologist 'Fitz'. Fitz and his wife are back in the UK after 10 years living in Australia. Whilst on what was meant to be a fleeting visit to attend his daughter's wedding, Fitz finds the lure of a new murder investigation irresistible, despite the changes to the people and places he knew before - and he leaps at the chance to help police crack the apparently random killing of a well-connected American comedian. He's soon on the trail of a troubled ex-soldier, who - like Fitz - is trapped in the past. Tormented by his experiences in Northern Ireland, and haunted by the ghosts of his Comrades, Fitz is alone in understanding - but will he be able to stop him killing again?