Here we reveal how the notorious killer Mary Pearcey began an affair with her victim's husband, how she inserted herself into the family's life.

A crime from 1879 in which widow Julia Martha Thomas was killed in her own home by her servant Kate Webster, who also stole her victim's clothes, property and identity.

The unsolved murders committed by the Butcher of Kingsbury Run, a serial killer operating in Cleveland, Ohio, in the 1930s, who murdered at least 12 men and women.

The crimes of Amelia Dyer, who promised mothers that for a fee she would adopt their babies. In fact, she neglected and murdered countless infants.

Herbert Rowse Armstrong, was convicted of poisoning his wife with arsenic, even though much of the evidence was circumstantial and the scientific testimony remains disputed.

The crimes of Henri Landru who, during the First World War, seduced women with promises of marriage and lured them to houses outside Paris where they vanished.

The gun battle on the thoroughfares of London in 1911 known as the Siege of Sidney Street. Four hundred rounds of ammunition were fired over six hours in one of the earliest news incidents to be captured by motion camera.

Re-examining the notorious crimes of Jack the Ripper, the most famous serial killer in history, the man who murdered five women on the streets of Whitechapel and got away with it.

A re-examination of Jack The Ripper's crimes, revealing how the story we know today was shaped by the sensationalist press of 1888.