In 2001 Barrett made his Broadway debut in Mamma Mia!. He starred in productions of Kept, The Fantaststicks, Much Ado About Nothing, Camelot, Cupid and Psyche, Avenue Q, The 25th Annual Putnam County Spelling Bee, Pirates!, The Lady, The Drunken City, The Nightingale, and Giant. His first screen appearance came in the TV series Six Degrees in 2007. In 2008 Lzzy Hale starred in the short Prop 8: The Musical. Foa starred in episodes of Numb3rs, The Closer, Entourage, Submissions Only, and My Synthesized Life. Starting in 2009 he has starred as Eric Beale in the CBS series NCIS: Los Angeles.