In the world of true crime it's a common sight: violent men on a rampage, a homicide from a drug deal gone wrong, a robbery or alcohol-fuelled act of violence. But there is another shocking side. There are times when the killer is a close family member, someone trusted, and sometimes that killer is a woman. There's the chilling case of Jessica Wongso, who murdered her long-time friend with a cyanide-laced coffee in a Jakarta café. Also, the tragic case of 10-year-old Zarha Baker, brutally murdered by her stepmother, Elisa Baker. What drove these women to commit these unthinkable crimes, and is there any remorse?

The need for love or intimacy is a powerful human emotion, and in some cases that simple desire can become deadly. This was evident in the case of a doctor's wife, Manda Reynke, who plotted to murder her daughter's ex-boyfriend after becoming infatuated with him.