New eye-witness testimony and a television documentary about the McCready case casts doubt on the original murder investigation. Det. Supt. Walker is suspended from duty, and decides to return to Glasgow to find new evidence to prove his innocence, in order to save his career, relationship and reputation.
D.I. North re-investigates an eight-year-old murder case and finds that Det. Supt. Walker was in charge of the original inquiry. The man convicted of murder continues to assert his innocence.