Background
The eldest of three, he was born and raised in New York City"s Harlem.
The eldest of three, he was born and raised in New York City"s Harlem.
He worked for John Hancock Insurance as a life insurance agent in Poughkeepsie, New York, while pursuing his acting career, starring in several stage productions in the New Paltz, New York, locale. Denison is most recently known for his role as Detective Andrew Flynn in The Closer (2005-2012) and its spin-off Major Crimes (2012–present). He is well known for his role as mob boss Ray Luca on the National Broadcasting Company crime drama Crime Story (1986-1988).
Afterwards, he starred and guest-starred in several crime movies and television programs, notably as undercover agent John Henry Raglin in Wiseguy (1987-1990), City of Hope (1991), as Joey Buttafuoco in The Amy Fisher Story (1993), as John Gotti in Getting Gotti (1994), Criminal Passion (1994), and as head coach Mike George in Entertainment and Sports Programming Network"s drama series Playmakers (2003).
He appeared in Season 1, Episode 3, of Charmed (1998-2006) as the father of the Halliwell sisters. In 2005, he appeared on Criminal Minds as Sergeant
Weigart. He played Detective Buroughs in Karla (2006).
He had a recurring role as Aldo Burrows on the Fox series Prison Break (2005-2009). In 2000, he played the role of a killer for hire in Walker, Texas Ranger (1993-2001).