British Police: Our Toughest Cases

DS David Swindle and forensic scientist Carol Rogers recount how the murder of Angelika Kluk in 2006 was linked to a serial killer.

In 1991, 13 children collapse in a Lincolnshire hospital: four of them died. DS Stuart Clifton reveals the discovery of a child serial killer.

In 2012, five-year-old April Jones disappeared while playing with friends in a Welsh village. DS Andy John recalls the hunt for her killer.

For 17 years, a serial attacker raped elderly victims in their own homes in south London. How did officers catch the culprit?

In the 1980s and '90s, there were around 200 murders and attacks on sex workers across Britain. Police were looking for a serial killer.

In 2009, the sleepy Norfolk village of Fakenham was hit with the brutal murder of Steven Murphy.