A beloved California art gallery manager who was writing an illustrated children's book has been stabbed to death in broad daylight. Rachell Summers, 73, was stabbed 11 times outside Capitola Mall in Santa Cruz County on Monday in what investigators have called a random act of violence. Tyler Leibelt, 19, has been charged with murder while lying in wait and using a deadly weapon, court records show. He has not entered a plea. #santacruz #thecrimedesk #capitolamall #rachellsummers #tylerleibelt