Mari Henderson is a Deputy District Attorney in Los Angeles. As an on-air legal analyst, she has appeared on ABC News, E! News, CNN, KTLA, Oxygen, Investigation Discovery and Reelz. She has also contributed to Dan Abrams' Law and Crime, Huffington Post, CBS News Radio (KNX 1070), ABC News Radio (KGO) and CKNW Radio. 

Prior to joining the Los Angeles County District Attorney, Mari worked in corporate law defending major California companies including Pacific Gas and Electric (PG&E) and the University of Southern California (USC) in cases ranging from labor and employment disputes to lawsuits stemming from one of the largest wildfires in California history. While working as an associate at Quinn Emanuel, Mari helped launch the firm's Crisis Management practice group, a group dedicated to providing both legal and public relations assistance to companies facing scandals in the public eye.

Mari also hosted her own legal news web series titled "Justice is Served," where she covered trials making headlines nationwide and interviewed high-profile attorneys, including Lisa Bloom, Carl Douglas (who defended OJ Simpson), and Brian Panish (who represented Michael Jackson's family).

Mari graduated from UCLA Law School. Before going to law school, she worked as an on-air reporter for NY1 News, covering everything from the resignation of Anthony Weiner and congressional elections to hurricanes and snowstorms. Mari graduated from Northwestern University's Medill School of Journalism with a bachelors degree and masters degree in Broadcast Journalism.