Ricardo "Richard" Muñoz Ramírez (born February 29, 1960 in El Paso, Texas) is a convicted Mexican American serial killer awaiting execution on California's death row at San Quentin State Prison. Prior to his capture, Ramírez was dubbed the "Night Stalker" by the news media as he terrorized California.Early lifeRamírez may have been influenced into becoming a murderer by his cousin Mike, a Special Forces Vietnam War veteran who boasted of killing and torturing his Vietnamese enemies and showed him Polaroid pictures of his victims. Ramírez was present the night Mike shot and killed his wife, and her blood splattered on Ramirez's face.Criminal careerOn March 17, 1985, Ramírez attacked 22-year old María Hernández outside her home. He shot her before entering her house. Inside was Dayle Okazaki, age 34, whom Ramírez immediately shot and killed. Hernández survived. The bullet had ricocheted off the keys she held in her hands, as she lifted them to protect herself. Within an hour of killing Okazaki, Ramírez struck again in Monterey Park. He jumped 30-year-old Tsai-Lian Yu and pulled her out of her car onto the road. He shot her several times and fled. A policeman found her still breathing, but she died before the ambulance arrived. The two attacks occurring on the same day bolstered media attention, and in turn caused panic and fear among the public. The news media dubbed the attacker, who was described as having long curly hair, bulging eyes and wide-spaced rotting teeth, "The Walk-in Killer" and "The Valley Intruder".