Sam Waterston will reprise his District Attorney Jack McCoy role on NBC's Law & Order revival

Variety

Waterson, who joined Law & Order in its fifth season in 1994, will return as McCoy when Season 21 premieres in February. “Very few casting announcements have ever given me this much pleasure,” said Law & Order creator Dick Wolf in a statement. “Since day one, Sam has had perfect pitch when it comes to Jack McCoy as a character who both reflects and expands our ability to understand the law. He is the ultimate conscience of the show and I look forward to him emulating the career of New York District Attorney Robert Morgenthau, who served until he was 90. With both Sam and Anthony (Anderson) returning, it shows that the 21st season is merely a continuation of where we left off.” Waterston recently wrapped filming on Grace and Frankie and is also starring in Hulu's The Dropout.