Katherine Webster: dismembered and gutted her former employer, boiling the parts down into a sludge and selling it to the local pub as the 'best dripping'.

George Joseph Smith: married several women under different aliases, only to drown each of them while they bathed.

Patrick Mahon: swept pregnant Emily Kay off her feet and brought her to his house of horrors, where he chopped her up into 37 different pieces and torched her bones.

From the torched bones to the dismembered bodies hidden in haystacks, London has been home to some of the most gruesome murders in history. Based on official case files, trial transcripts and first-hand accounts, Scotland Yard follows some of their most notorious murders to look at how they pushed the police force to its limit, forcing them to grow and develop new techniques.

Filled with stories of decapitation, public executions, poisoning and more, Scotland Yard is a fascinating look into some of the most horrific crimes in history and how they've shaped the police force into what it is today.