This spin-off of Inspector Morse comes to an end this series with the semi-retired Lewis battling a case from the start of his career, which saw him arrest a man for the murder of three police officers. It was one of his first big successes on the job although now, 13 years on, the man is about to win his freedom which could put the detective's reputation in jeopardy, which would just be a bit crap really considering the amount of cases he has solved since then, wouldn't it?