Earlier this year, I found myself enthralled by an impromptu rewatch of Mad Men—the seductive period drama about the golden age of advertising during the 1960s that concluded its seven-season run ...

There were so many powerful characters to choose from across the seasons.

On its surface, AMC's "Mad Men" is about the formative years of modern advertising agencies in 1960s New York City. But it doesn't take long before the show's many layers begin to peel back, revealing ...