
An in-depth look at some of the world's most dangerous murderers.

American serial killer Richard Trenton Chase brutally murdered six people within one month.

Billy Dunlop killed Julie Hogg in 1989 but was acquitted after two failed trials.

Exploring a case highlighting the many dangers of online grooming; on 17 February 2014, fourteen-year-old Breck Bednar was lured to a London flat before being killed by a fellow teenager.

Two missing mothers were linked when evidence tied Derek Brown to both their violent deaths.