Callum Keith Rennie stars in NBC's drama "The Firm" as Ray McDeere, Mitch McDeere's (Josh Lucas) charming yet volatile older brother whose work as an investigator in Mitch's office is uniquely informed by his past stretch in prison for manslaughter. Despite a gritty past that stands in stark contrast to that of his Harvard-grad brother, Ray shares one key quality with Mitch - a loyalty that is unbreakable.

Born in Sunderland, England and raised in Alberta, Canada, Rennie was first struck with the passion to act while living in Edmonton. Starting out in university radio and working his way to the renowned Shaw Festival, Rennie moved to Vancouver and quickly caught the eye of producers and directors.

Rennie's early television appearances include "My Life As a Dog," for which he won a Best Actor Gemini Award, "Twitch City," and "Due South," for which he was nominated for a Best Actor Gemini Award. Rennie landed his first independent feature-film role in director Mina Shum's "Double Happiness," which garnered him a Best Supporting Actor Genie nomination. He continued to star in many other Canadian films, including Kari Skogland's "Men with Guns" and Bruce McDonald's cult favorite "Hard Core Logo."

He went on to star in other films, such as Christopher Nolan's "Memento," David Cronenberg's "Existenz," Lynne Stopkewich's "Suspicious Rivers," McDonald's "Picture Claire," and "Last Night," directed by Don McKeller, which brought Rennie a Best Supporting Actor Genie Award. He then starred in the critically acclaimed "Flower & Garnet" from director Keith Behrman, "Falling Angels" opposite Miranda Richardson, and in Daniel MacIvor's "Wilby Wonderful."

Rennie joined Carrie-Anne Moss, Sigourney Weaver and Alan Rickman in "Snow Cake," and then again appeared opposite Moss in director Carl Bessai's moving feature "Normal." His work in "Normal" won him his second Genie Award for Best Supporting Actor. Rennie also worked on David Goyer's "The Invisible" opposite Marcia Gay Harden, and shortly thereafter, in Chris Carter's much-anticipated, feature-film sequel "X-Files: I Want to Believe," as well as "Case 39" opposite Renee Zellweger. Rennie also appeared opposite good friend Paul Gross in the western comedy "Gunless," a supporting role that rewarded him with yet another Genie Award nomination.

His television credits include the multi-award-winning miniseries "Tin Man" from director Nick Willing, which broke several viewership records, and the global hit series "Battlestar Galactica," where Rennie played his now infamous Cylon role of Leoben for four seasons. His outrageous turn as rock producer Lew Ashby in Showtime's "Californication," opposite David Duchovny, generated a great deal of fan buzz and was subsequently followed up with several recurring appearances on "FlashForward," "24" (going toe to toe with fellow Canuck Kiefer Sutherland), "Rookie Blue" and "Alphas."

Most recently, Rennie's starring performance in the one-hour series "Shattered" from eOne (Entertainment One Television) and Canwest Media, as a seasoned police detective dealing with his own multiple personality disorder, earned him both a Gemini Award and a Leo Award for his riveting work and was followed by recurring roles on Emmy-nominated "The Killing" and television mainstay "CSI: Miami."