Enterprise News and Pictures 6/7/16 Pic shows: Sarah Williams, 35, who is accused of murdering love rival Sadie Hartley, 60, a company director and keen horsewoman, who was found stabbed to death at her luxury home in Helmshore, Lancashire, In January this year. Williams and her best friend Katrina Walsh, 56, are both currently on trial at Preston Crown Court for murdering Sadie Hartley in a plot described as "the stuff of spy novels. " Jealous Walsh wanted tne businesswoman dead because she had begun a relationship with her ex-lover Ian Johnston, 57. She lunged at Sadie Hartley with a cattle prod when she opened the door and then stabbed her at least 40 times. Williams is pictured here on her "open" Facebook page. See story...