Holt McCallany (born September 3, 1963) is an Irish-American stage and screen actor, best known for his collaborations with director David Fincher, including a starring role on the Netflix original series Mindhunters as FBI Special Agent Bill Trench. A prolific character actor, he has also appeared in numerous supporting and guest roles in high-profile films and television series, often cast as thugs or authority figures. His first job in the professional theater was as an apprentice actor at the Great Lakes Shakespeare Festival in Cleveland, Ohio, in the same apprenticeship once served by Tom Hanks, among others. Subsequently, he returned to New York City and was cast as an understudy in the brazers production of Biloxi Blues. McCallany landed a series of supporting parts in such films as Casualties of War, Alien 3, Creepshow 2, The Search for One-eye Jimmy, Jade and Rough Riders. After playing the legendary boxing trainer Teddy Atlas in the HBO telefilm Tyson, he became a supporter of the Atlas Foundation Charity, a grassroots organization dedicated to helping children and families with medical and financial hardships. He continued working in films and television throughout the nineties with roles in films such as Fight Club, Three Kings, Men of Honor and Below, among others. He played a detective with psychological problems who commits suicide in the season three finale of CSI: Miami, and a soldier with post-traumatic stress disorder on Criminal Minds. He appeared in the 2010 Warner Bros. film, The Losers, based on the graphic novel from DC Comics. McCallany also was the star of the 2011 FX television series, Lights Out, playing an aging boxer ("Patrick 'Lights' Leary") forced out of retirement and into a comeback bid to regain the heavyweight title, despite having pugilistic dementia. McCallany is a writer and producer of the film version of the true-life story of Doreen Giuliano, a Brooklyn wife and mother, who claims her son John Giuca was wrongfully convicted of murder after being targeted by a corrupt prosecutor. Giuliano's story of her attempts to prove her son's innocence was optioned by a major network. McCallany co-starred as a villain in Paramount Animation's first mostly live-action film, Monster Trucks (2016). In 2017, McCallany co-starred in the Netflix series Mindhunter as Bill Tench, an FBI agent researching serial killers in the late 1970s.

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