DNA leads detectives to John Thomas Jr., 72. He is held in two slayings, but police suspect he may have killed up to 30 elderly Westside and Claremont women a decade apart.
The first wave of slayings haunted Los Angeles in the mid-1970s. The killer slipped mostly unseen through the night, preying on older women who lived alone. He raped them and squeezed their necks until they passed out or died.