Channel 4 - Married to a Psychopath (2022)

The story of the hunt for murderer Malcolm Webster, who targetted wealthy women for their money. The programme explores the crimes from the perspective of detective Charles Henry, who was behind the three-year investigation to re-open a cold case. He would later be joined by 20 colleagues, who gathered more than 1000 witness statements and used 90 search warrants for banks, building societies and solicitors.