From 2007 to 2009 she starred as Lisa George in the TV series Dirty Sexy Money. McLellan currently stars in the CBS drama series NCIS: New Orleans since 2014. She has also starred in the movies Mr. Holland’s Opus, Inventing the Abbotts, Stonebrook, Stranger in My House, Dungeons & Dragons, Conversations with God, Reunion, and Back to L.A. McLellan has also appeared in episodes of the TV series Nowhere Man, Sliders, Silk Stalkings, Diagnosis Murders, The Invisible Man, First Monday, House M.D., Royal Pains, The Mentalist, and NCIS.