ID of Sierra skull helps prove the Zodiac killed her, sleuths say sfchronicle.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sfchronicle.com Daily Mail and Mail on Sunday newspapers.
The Zodiac Killer murdered South Lake Tahoe nurse Donna Lass in 1970, amateur sleuths have contended, and now they say the long-delayed identification of her skull helps prove their case.