When 13-year-old Olly Stephens was ambushed in a park by two teenage boys, the evidence points to the attack having been planned on social media.

Police investigate the disappearance of 29-year-old school teacher Abi Fisher. Will her internet search history help uncover what happened?

Exploring the tragic murder of Jade Ward, a 27-year-old mother of four. Discover how police turned to social media, phone data and CCTV to crack the case.