The Emmy winner has booked a two-episode stint on the Showtime series' upcoming season as Abraham, described as a "powerful, well-dressed gay man who is also a political activist."
In other casting news...
Lisa Edelstein is moving to "Elementary." The "House" alum will guest star on Episode 7 of CBS' debut Sherlock Holmes series as Heather Vanowen, the CEO of a high-end PR firm. Holmes (Jonny Lee Miller) is investigating a deadly bombing aimed at her company. [TVLine]
Drea de Mateo has been cast in "Stalkers." The "Sopranos" vet has joined Lifetime's upcoming movie as temperamental police officer as Diane Harper. [THR]
Patton Oswalt is swinging by "Justified."Oswalt will appear on the FX series as local constable Bob Sweeney. [TVLine]
Daniel Henney is headed to "Hawaii Five-0."The "Three Rivers" star will play Adam's (Ian Anthony Dale) brother on the CBS series. [TV Guide]