For eighteen years Loni worked as a criminal trial attorney, prosecuting cases all over Los Angeles County. She prosecuted over fifty trials, ranging from murders and gang cases to sex crimes and DUIs.

 

For three years Loni worked in the Crimes Against Police Officers Special Unit, focusing solely on cases involving the murder or attempted murder of police officers. 

 

In 2001, Loni was promoted to Deputy-in-Charge of the Malibu Office, where she handled several high-profile celebrity cases, including Nick Nolte's DUI, Nicole Richie's drug case, Kim Delaney's reckless driving case, Sean Stewart's assault case, and Meg Ryan's stalker. 

 

From 2003 to 2006 Loni ran the Hate Crimes Division, managing the most complex hate crime cases in the county, and providing hate crime training to law enforcement agencies.

In 2006, Ms. Coombs left the DA's office and transitioned into the broadcast world, working for national and local broadcast outlets. She has been a legal commentator, reported from the field, anchored primetime newscasts, and hosted morning shows on numerous news and entertainment shows.

Loni is the author of "You're Perfect" and Other Lies Parents Tell. The Ugly Truth About Spoiling Your Kids. This call to action for parents is written from the unique perspective of a criminal prosecutor and mother, sharing the critical insights she learned from working with hundreds of young people and their parents as they faced the life-changing consequences of their bad behavior.

Loni co-hosted Crime Feed Podcast for Investigation Discovery. Every week she and co-host Darren Kavinoky discussed the latest shocking headline stories, cold case updates, and big trials. 

She is also a frequent guest on True Crime Daily- The Podcast. True Crime Daily has the largest and most active true crime digital community in the world, with more than 4 million subscribers on YouTube and more than 3 million fans on Facebook.