Bystander Smashes Suspected Knifeman's Head with Rock After Grandma and Dog Fatally Stabbed in Park

"True hero. That guy was out to kill anybody and everybody -- Who knows how many more people he would've taken?" A grandmother and her dog were stabbed to death on Thursday afternoon while walking in a park outside Los Angeles. Jeanne Edgar, 66, and pet Sachi died at the scene of the attack in Lone Hill Park in the city of San Dimas. The knife-wielding suspect was brought down by a bystander who threw a rock at the suspect's head, knocking him unconscious, according to ABC7. "Jeanne was a beauti...