Leung, 41, will play a man who sues a social networking site for failing to protect his privacy. After he posts an anonymous blog about democracy in China, the government then jails and tortures him. Leung's character is represented by Lockhart, Gardner and Bond.
Hickey, 47, will play the CEO of the social networking site.
Leung is best known for playing Miles Straume on Lost, and for his recurring role on The Sopranos. Hickey plays Sean, the eccentric homeless brother of Cathy (Laura Linney) on the Showtime comedy The Big C.
Their episode is scheduled to air Tuesday, March 1. The Good Wife airs Tuesdays at 10/9c on CBS.