Shock in South Pasadena as a woman's grandchildren find her stabbed to death in her home, and the police don't know who might have done it. A body is found floating in the MacArthur Park lake, and the police think it was murder. The state's earthquake warning system gets a big upgrade. How CalTrans is using AI to improve traffic in California. The L.A. Local is sponsored by the LA Car Guy family of dealership