Catherine Bell is a British-American actress and producer, best known for her role as Lieutenant Colonel Sarah MacKenzie on the television series JAG. Born on August 14, 1968, in London, England, she moved to the United States at a young age and grew up in California. In addition to her work on JAG, Bell has appeared in various films and television shows, including the popular series Army Wives and the Hallmark Channel's Good Witch. She has received praise for her performances and has built a successful career in the entertainment industry.