All Seasons

Season 1

  • S01E01 Episode 1

    • July 14, 2016
    • ITV1

    Mark Williams-Thomas re-investigates the disappearance of Carole Packman. With the help of neighbours and friends, he retraces Carole's last known steps.

  • S01E02 Episode 2

    • July 21, 2016
    • ITV1

    Mark Williams-Thomas investigates the disappearance of Carole Packman. He travels to Canada where someone with Carole's name started a job a year after the real Carole vanished.

  • S01E03 Episode 3

    • July 28, 2016
    • ITV1

    Mark Williams-Thomas re-investigates the disappearance of Carole Packman. Mark uncovers a series of letters in which Sam's father speaks for the first time about what happened.

  • S01E04 Episode 4

    • August 4, 2016
    • ITV1

    Mark Williams-Thomas concludes his investigation into the mysterious disappearance of Carole Packman, focusing on Carole's 1985 family home.

Season 2

  • S02E01 Episode 1

    • April 5, 2018
    • ITV1

    Teenager Louise Kay has been missing since June 1988 in a case that has baffled police and left her family desperate for answers.Williams-Thomas's investigation sends him on the trail of the prime suspect in her murder, convicted killer Peter Tobin, who was living nearby at the time. As he delves deeper into the case he discovers a series of other missing women and unsolved murder cases who could also be the undetected victims of a serial killer.

  • S02E02 Episode 2

    • April 12, 2018
    • ITV1

    In the second episode, Williams-Thomas investigates the notorious murders of Anna Kenny, Agnes Cooney and Hilda McAuley - who were all abducted and brutally killed in similar circumstances within four months of each other in Glasgow in 1977.

  • S02E03 Episode 3

    • April 19, 2018
    • ITV1

    Mark Williams-Thomas's investigation uncovers another Glasgow murder that bears all the hallmarks of suspected serial killer Angus Sinclair. There is just one problem - unlike the murders of Anna Kenny, Agnes Cooney and Hilda McAuley, this crime has already been solved. A week after 37-year-old baker Frances Barker's body was discovered, lorry driver Thomas Ross Young was arrested, and was subsequently jailed for life. The investigator tries to establish whether the police got the wrong man - or if there could be another explanation. Last in the series.