Louis Ross Roulet (b. 1973) is the son of Mary Alice Windsor, and a resident of Beverly Hills. He lives in the guest house of his mother's home and works as a real estate agent in his mother's firm. He is single, about 6 ft. in height and 180 lbs. He is a graduate of UCLA and claimed to have attended one year of law school at UCLA, although he never actually attended law classes. His last IRS return (2004) showed an income of approximately $250,000.

On 6 March, 2005, he was arrested for aggravated assault and the attempted rape of Regina Campo. The assault charge was later bumped up to attempted murder. Although Cecil Dobbs was the family's lawyer, Roulet was represented in this case by Mickey Haller. Bail was set at $1 million, and a bond in that amount was provided by Fernando Valenzuela.


In the 2011 film, Roulet was played by Ryan Phillippe.


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