3月30日より配信だそう
https://www.stylist.co.uk/entertainment/tv/six-four-itv-crime-thriller-cast-plot-release-date/666979
https://www.imdb.com/title/tt20765320/
https://www.whattowatch.com/watching-guides/six-four-cast-plot-and-all-about-the-new-crime-thriller