Lady Killers

Amelia Dyer qualified as a nurse and became a baby-farmer, looking after others' babies. After deaths of children in her care she was charged with neglect and sent to jail

Beverly Allitt studies nursing, obtaining a job in the local hospital, where she is well-regarded. She kills four children for which she is put away in a secure hospital for life.

Rosemary West and husband Fred West killed ten girls. Rose along with Myra Hindley,is the only British murderess denied any hope of release.

Mary Ann Cotton, hanged in Durham in 1873 was a Victorian Black Widow. Killing for greed, she murdered husbands and even her own children.

Countess Bathory was a lesbian who got young girls to come to her castle on the pretext of finding them work and then tortured and killed them.