'Castle' Casts 'Mob Doctor' Alum in Season 6

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With tonight's premiere of Castle's sixth season comes news on the story arcs that will come a bit later in the season.

The ABC drama has cast James Carpinello for a guest role, reports HuffPost TV.

Carpinello, an alum of FOX's The Mob Doctor, will appear in the seventh episode of the season, “Like Father, Like Daughter,” playing a man named Frank Henson, a death row inmate who continues to proclaim his innocence.

Further details on the casting via HuffPost TV:

Carpinello's other notable credits include "Gangster Squad," "The Good Wife," "So noTORIous" and Broadway stints in "Saturday Night Fever" and "Rock of Ages." The actor also shares a Joss Whedon connection with Fillion -- Carpinello is married to Amy Acker, who co-starred with Fillion in Whedon's "Much Ado About Nothing" (and in three episodes of Fillion's shortlived Fox series "Drive," created by "Angel" executive producer Tim Minear).

Also set to make appearances in "Castle" Season 6 are Lisa Edelstein, who will play a tough federal investigator with ties to Beckett; Glenn Morshower, who has been cast as a secretive general; Warren Christie, who plays a reporter with a penchant for uncovering stories that are detrimental to national security; Joshua Bitton, who will play a new detective at the 12th Precinct who is eager to prove himself; Antonio Sabato Jr., who is cast as Ramon Russo, an actor best known for his role on the fictional "Saved By The Bell"-esque '90s sitcom "2 Cool For School", and Yancey Arias, who will appear in the first two episodes of Season 6 as Carl Villante, the head of an elite investigative unit who butts heads with both Beckett (Stana Katic) and Castle (Nathan Fillion).

Season 6 of Castle premieres tonight at 10:00 PM ET on ABC.