Series four received positive reviews, with a 79% approval rating on Rotten Tomatoes, based on 14 reviews. It holds a Metacritic score of 68 out of 100, based on 11 reviews, indicating "Generally favorable reviews". After a four-year hiatus, the Series five broadcast in 2019 met with positive reviews, garnering a 95% approval rating on Rotten Tomatoes, based on 21 reviews. The site's consensus reads: "Luther returns in fine form from its extended exodus with a grisly mystery and the welcome reappearance of Ruth Wilson's psychotic villain, Alice Morgan." The first series of the show premiered in Australia on ABC1 on 15 October 2010 and in the United States on BBC America two days later. The second series debuted in the United States on BBC America on 29 September 2011 and Australia on ABC1 on 24 February 2012. The third series ran in the United States on BBC America on four consecutive nights beginning 3 September 2013. The fifth series premiered in the United States on BBC America on 2 June 2019. Paul Englishby composed "Luther"'s soundtrack. He incorporated many pop and rock songs into the soundtrack, using these generally in the end credits. A CD titled "Luther - Songs and Score From Series 1, 2 and 3" was released on 19 August 2013 and contains many of the themes and songs used in the television series. The opening theme song is a shorter version of "Paradise Circus" by Massive Attack from the album "Heligoland" (2010) and features the voice of Hope Sandoval. Co-creator Neil Cross released "" in 2011 following the broadcast of the second season. Elba expressed enthusiasm for a film adaptation of the show: "That's where the ultimate "Luther" story will unfold is in the big silver screen — London as a huge backdrop and a very menacing, horrible character to play against." Cross revealed that plans were being made for a "Luther" film that would begin production at the conclusion of the third season, the show's last. In May 2012, Elba stated that the third season would serve as the lead-in for the planned film. In September 2012, Cross announced that he was in the process of creating a spin-off of "Luther" centered around the character Alice Morgan and starring Ruth Wilson. Cross continued to rule out any further episodes for television following the broadcast of the third season in July 2013. The prospective film was to be based on "The Calling", with Elba, Steven Mackintosh, Indira Varma, and Warren Brown set to reprise their roles from the television series.