‘Psycho ex’ who slew love rival is jailed for life

A “psycho” ex has been jailed for life and ordered to serve a minimum of 30 years in jail for the gruesome stun gun murder of her love rival.

Sarah Williams, 35, shot successful businesswoman Sadie Hartley, 60, with a 500,000-volt stun gun as her unsuspecting victim answered the door at her home, Preston Crown Court heard.

Seconds later, with “demonic savagery”, she used a kitchen knife to stab the semi-paralysed mother-of-two in the face and neck, inflicting more than 50 injuries, before leaving her in a pool of blood in the hallway of the £500,000 house in Helmshore, Lancashire.