S01:E01 - Stephen Beadman and Luke Harlow
Kayleigh Haywood, lured to the home of Luke Harlow via Facebook, was held hostage by Harlow and his neighbour.
S01:E02 - George Appleton
Claire Wood met George Appleton on a dating site. When she ended the relationship, he harassed her.
S01:E03 - Stefano Brizzi
Stefano Brizzi met Gordon Semple online. After arranging to meet, Brizzi strangled him.
S01:E04 - The Murder of Sofyen Belamouadden
Sofyen Belamouadden was beaten and stabbed in a frantic attack by a gang at a train station.
S01:E05 - Brian Lewis
When Brian Lewis' relationship with his girlfriend began to fall apart, he became jealous of her.
S01:E06 - Tony Bushby
Tony Bushby used fake Facebook accounts to gain the trust of Katie Briscoe.
S01:E07 - Stephen Port
Stephen Port poisoned and murdered four men whom he'd met on gay dating sites.
S01:E08 - Joshua Davies
After Joshua Davies splits with his girlfriend, he posts messages on social media saying that he wants to kill
S01:E09 - Sammy Almahri
Nadine Aburas met millionaire businessman Sammy Almahri on a dating site.
S01:E10 - Michael Roberts
Vicky and Michael's relationship ends due to his infidelity with women he met online.