I knew it!
The Groovy Murders--when Mad Men's premiere skipped over the Summer of Love but ended up in a dingy Village building, I immediately thought of the Groovy Murders (aka the hangover after the Summer of Love). Oh, such an awful story--I first heard about this during a documentary on TV (PBS?) about the Summer of Love and they talked about how very quickly the Haight turned from this idyllic hippie sanctuary into way-too-crowded, smelly and unsafe. How quickly the Summer of Love soured (in a matter of weeks, really)--and one example was the Groovy Murders. Linda especially stayed with me because she had such a WASPy privileged background--she even rode, for God's sake! Just another kid trying to figure things out and was murdered by a couple of "drifters." Awful and very sad.