Maggie Lawson was born on August 12, 1980 in Louisville, Kentucky, USA as Margaret Cassidy Lawson. She is known for Gamer (2009), Psych (2006) and Cleaner (2007). She was previously married to Benjamin Koldyke. Margaret Cassidy Lawson is an American actress who is best known for her role as Detective Juliet "Jules" O'Hara in the TV show Psych. From 2018 to 2019, she held the recurring role of Nathalie Flynn on Fox's Lethal Weapon's third and final season.