Deceit - Season 1 Episode 2 -

Twenty-three-year-old Rachel Nickell was stabbed 49 times in front of her young son on Wimbledon Common in July 1992 This fact-based crime drama revisits the investigation into her killing, which saw an undercover officer - known by the codename Lizzie James - used as bait to entrap Colin Stagg, later proved to be innocent of the crime.