FX has announced that both Campbell Scott and Martin Short are joining their popular drama Damages as series regulars. In other casting news, both Lily Tomlin and Keith Carradine will guest star during season three, which is set to premiere in January. Here is the official press release:

FX's award-winning legal thriller Damages is adding four superior actors to its cast with Campbell Scott and Martin Short signing on as series regulars, and Lily Tomlin and Keith Carradine joining as special guest stars for the upcoming season premiering in January. Production of the show's 13-episode third season begins tomorrow in New York.

For the second consecutive year, +Damages received seven Emmy Award nominations and Glenn Close won the Emmy for Outstanding Lead Actress in a Drama Series.

Scott, Short, Tomlin and Carradine join returning stars Close, Rose Byrne and Tate Donovan. Close, who won her second consecutive Emmy for Lead Actress in a Drama for her portrayal of ruthless attorney "Patty Hewes," became the first back-to-back winner in that category since Kathy Baker won for Pickett Fences in 1995-96. Byrne received her first Emmy nomination this year for Outstanding Supporting Actress in a Drama Series for her performance as "Ellen Parsons," Patty's protégé.

Scott starred in multiple episodes of Royal Pains, and his notable film credits include The Secret Lives of Dentists, Big Night and Dying Young.

Short joins the cast as a two-time Emmy nominee for his performance in Primetime Glick and his supporting role in Merlin. He is also known for his roles in Father of the Bride, Three Amigos!, and countless appearances on Saturday Night Live.

Tomlin is a multiple Emmy Award winner and Academy Award nominee. She has played roles on award-winning hit series Desperate Housewives, Law & Order: Special Victims Unit, The West Wing, Will & Grace and The X-Files.

Carradine, who co-starred with Tomlin in the Academy Award winning film Nashville, most recently co-starred in Dexter as Special Agent Frank Lundy.

Other actors who will appear in the upcoming season of, +Damages include Ebon Moss-Bachrach, Michael Gaston and Darren Goldstein who appeared in the show's inaugural season as "Chris Sharp."

+Damages is produced by Sony Pictures Television and FX Productions. Damages is executive produced by Todd A. Kessler, Glenn Kessler and Daniel Zelman, co-executive produced by Aaron Zelman, and produced by Mark A. Baker.