Tony Denison first worked as an insurance agent before pursuing an acting career. After appearing in several stage productions across New York, he made his film debut, in 1981's "Waitress". His breakout role was in the 1986 television series "Crime Story", where he appeared as mob boss Ray Luca.
Denison is also known for his recurring role in "Wiseguy "(where he appeared to temporarily take the place of injured Ken Wahl), "Melrose Place" and "Prison Break". He was also part of the short-lived 1996 series "Love and Marriage". In 2005, he joined the cast of The Closer.
Currently, Denison stars in the new TNT drama, Major Crimes