Lewis is a British television detective drama produced for ITV, first airing in 2006 (pilot) then 2007. It is a spin-off from Inspector Morse and, like that series, it is set in Oxford. Kevin Whately reprises his character Robert "Robbie" Lewis, who was Morse's sergeant in the original series. Lewis has now been promoted to detective inspector and is assisted by DS James Hathaway, portrayed by Laurence Fox, who was promoted to inspector before the eighth series. The series also stars Clare Holman as forensic pathologist Dr. Laura Hobson, likewise reprising her role from Inspector Morse; and, from the eighth season, Angela Griffin as DS Lizzie Maddox.

ITV, legally known as Channel 3, is a British free-to-air public broadcast television network. It is branded as ITV1 in most of the UK except for central and northern Scotland, where it is branded as STV. It was launched in 1955 as Independent Television to provide competition and reduce the current monopoly to the then BBC Television. ITV is the oldest commercial network in the UK. Since the passing of the Broadcasting Act 1990, it has been legally known as Channel 3 to distinguish it from the other analogue channels at the time: BBC1, BBC2 and Channel 4.