a pretty convincing analysis

you should read this discussion about the perceived foreshadowing in mad men's recent seasons surrounding megan's character, and the potential inclusion of a sharon tate-type murder or tie-in to the historical murder itself.

I combed over the episode to look for anything that might possibly reference the Manson murders. Megan’s still dressing like Sharon Tate, for starters.
That dress, absolutely. That was the first thing I thought. And whatever canyon Megan lives in — Don makes that reference to Megan that she’s isolated, that he’s disturbed by that, and that he’s not sure that she’s safe there. I’m not sure they’re setting her up to be murdered, but she certainly might hear the shots in the night.

And then there’s Megan’s career. The pilot she was auditioning for, Bracken’s World, was a real show about starlets trying to make it in Hollywood.
You could link that back to Valley of the Dolls, which Sharon Tate was in. And that was sort of that lifestyle.
Though Megan hasn’t started taking drugs yet. [Editor’s note: Bracken’s World was created by Dorothy Kingsley, who co-wrote the Valley of the Dolls screenplay. Eerie!]

Okay, here’s the big one: Folgers coffee. Peggy and Ted have this big conversation about coffee while Peggy is holding a Folgers can, and then Stan walks in and says something like, “That was not about coffee.”
And Abigail Folger was one of Charles Manson’s victims. She was the heiress to the Folgers coffee fortune and was a friend of Roman Polanski, so she was staying at the house. I think that’s probably a good catch on your part. Because why would they have that coffee room debate?

details!