James Michael Imperioli (born March 26, 1966) is an American actor, writer and director best known for his role as Christopher Moltisanti on The Sopranos, for which he won the Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series in 2004. He also appeared in the TV drama series Law & Order as NYPD Detective Nick Falco. Imperioli spent the 2008-2009 television season as Detective Ray Carling in the US version of Life on Mars. He was starring as Detective Louis Fitch in the ABC police drama Detroit 1-8-7 until its cancellation. He wrote and directed his first feature film, The Hungry Ghosts, in 2008. In 2015, he starred in Mad Dogs, a dark-comic thriller television series available for viewing on Amazon's Amazon Prime subscription service in the U.S and on Shomi in Canada.