Britain's Most Evil KillersSeason 92024 · 10 episodesEpisodes1Adam WhelehanWhen the police investigate Adam Whelehan for the murder of Natalie Jarvis, they uncover a deadly plot fueled by cowardice, cruelty and misogyny.2Gavin McGuireWhen 16-year-old Mhairi Julyan was killed, detectives used cutting edge forensics before closing in on Gavin McGuire, a repeat sexual offender.3Robert HowardAcross three counties, over four decades, Robert Howard preyed on vulnerable women - leaving two teenage victims dead.4Graham McGillMary McLaughlin's violent death haunted Glasgow detectives, with no forensic leads - but new techniques revealed a killer.5Anthony RussellThree victims murdered, a string of robberies and a killer with nothing to lose - can the police catch Anthony Russell before he strikes again?6Hassan Al ShatanawiTen years after Laura May Al-Shatanawi met Hassan Al Shatanawi in Egypt, she became the devoted mother of a little boy, but she vanished without a trace.7Maria PearsonAfter leaving Maria, his bigamous wife, Malcolm Pearson and his innocent fiancé Janet discovered just how dangerous his ex really was.8Johnny MillerWhen Charlotte Murray didn't show up to spend her 34th birthday with her twin sister, their family knew something was seriously wrong.9Derek BrownWhen two women vanished, the cases weren't connected, until forensic evidence at Derek Brown's home proved their fates were violently intertwined.10Christopher McGowanWhen Christopher McGowan is bailed to Claire Inglis' home after yet another offence, the innocent woman becomes trapped in the orbit of a violent man.Season 1Season 2Season 3Season 4Season 5Season 6Season 7Season 8Season 10