Shudder and Switch

I read a book in the late 90's called First Person Plural by Cameron West about a boy who'd suffered terrible sexual abuse by his grandmother. So awful was the abuse, in fact, that his brain had to split into numerous personalities just to cope, even though most psychiatrists remain skeptical to this day as to whether or not multiple personalities even exist.

At one point of the book Cameron is in bed with his wife in the middle of hot steamy sex when one of his alters, a little boy, emerges and has all kinds of questions about what the hell was happening.
The situation freaked out Cameron's wife and forced her to realize how real her husband's alters really were.

At the back of he book, Cameron gives credit to Robin Williams, who I assume bought the rights but never sold Hollywood on the idea of a hero with multiple personalities. Having already made Sybil with Sally Field, I wondered if Hollywood had the attitude of "been there done that" with multiple stories.

The PriVILEged reinvents the use of the multiple by allowing each multiple to surface and is given the opportunity to become a hero. In essence, there are opportunities for four multiples in the story to become a hero masking their insecurities by dressing in drag.  It's an idea that stood the test of time over eight years, and one that totally transcended the book after Bille met Matty's first multiple.