The true crime drama series, A Confession, recently landed on Netflix, and it tells the true story of the investigation that led to the capture of notorious serial killer, Christopher Halliwell. The British series consisted of six episodes, and originally aired on ITV in 2019. It starred Martin Freeman as DS Steve Fulcher and Joe Absolom as Halliwell. It was based on the stunning true-crime book by Fulcher, titled Catching A Killer: My Hunt For Murderer Christopher Halliwell.