Manheim is a Law & Order veteran, guest-starring in three episodes during the initial run. Every legal drama needs a bad cop, and Donovan shines. Frank is a tough-as-nails detective that seeks justice by whatever means necessary. Jeffrey Donovan Detective Frank Cosgroveĭonovan joined the new Law & Order cast as Junior Detective Frank Cosgrove, the new partner of Det. With Waterston returning for Season 22, the actor becomes the longest-running cast member for the flagship series. The longtime district attorney leads a new team of police and legal experts tackling NYC's toughest criminals. Who is in the new Law & Order cast? Sam Waterston District Attorney Jack McCoyįans of the original run of Law & Order were excited to see Waterston return to the new Law & Order cast, reprising his role as Jack McCoy. Below, see a breakdown of those characters. But the original Law & Order returned triumphantly in Februarry 2022, airing its 21st season that featured both returning and new characters.
