Bound and beaten,  the body of a 15-year-old girl found behind bushes just feet away from a busy Sunnyvale, California, intersection 40 years ago left police in the dark for decades.

But last year, an anonymous tip led police to focus on the men in a single family as potential suspects. And after acquiring DNA from a relative of Gary Ramirez, police said they had enough to arrest the 75-year-old Hawaii man and charge him with the 1982 rape and murder of Karen Stitt.