It was the teen soap opera that invented the youth ensemble drama genre, and rose to the juu of the class: Beverly Hills 90210. For much of its 10-year run, the series reigned supreme among young people the world over. Its unforgettable characters spoke to a generation: from the brooding bad boy with a moyo of gold, Dylan McKay, to the always dependable Brandon Walsh and his down-to-earth sister, Brenda, millions of viewers tuned in weekly to see their trials and tribulations of these Minnesota teens transplanted to Beverly Hill’s glitz and glam. In this Behind Closed Doors, viewers will...