'Whitney' documentary: 5 things you didn't know about Whitney Houston

'Whitney' documentary: 5 things you didn't know about Whitney Houston Robert Hanashiro, USA TODAY

Just when you thought there was nothing more to learn about the late Whitney Houston, a new documentary is here to prove otherwise.

“Whitney” (in theaters nationwide Friday) rehashes the already well-chronicled life of the pop superstar, who drowned in a hotel bathtub in 2012 after years of cocaine abuse. 

The documentary mixes old news clips; fresh interviews with dozens of family members, friends and co-workers; and never-before-seen home videos and photos, courtesy of the Houston estate. "Whitney" manages to thoughtfully examine Houston’s life in a way that satisfies casual fans and provides new information for even the most hardcore enthusiasts.

“Whitney wasn’t just some icon,” her sister-in-law, Pat Houston, says in a news release. “This documentary shows her human side. … Things your mother or father or sister or brother or child may have gone through, Whitney went through all of that.”

Here are the five most surprising things we learned from “Whitney”.

For the full story, visit USAToday.com/Life/Movies.