Season 3 will debut in the second quarter of 2012.
This season, Cathy (Linney) progressed from Denial to Anger on the grief cycle and has become an all-out warrior in the fight against her Stage 4 melanoma, while her husband, Paul (Platt), stepped up to become her greatest advocate and treatment “cancierge.” She’s joined in her fight by her new oncologist, Dr. Atticus Sherman (special guest appearance by Alan Alda), and charming new buddy Lee (special guest appearance by Hugh Dancy), a fellow patient in an experimental clinical trial. Meanwhile, son Adam (Basso) sparks an odd friendship with an eccentric older woman (special guest appearance by Parker Posey), and Andrea (Gabourey Sidibe) finds love with Paul’s co-worker Myk (guest star Boyd Hollbrook). Sean (John Benjamin Hickey), now living in Marlene’s (special guest star Phyllis Somerville) old house, prepares for impending fatherhood as he rides the emotional rollercoaster that is Rebecca’s (special guest star Cynthia Nixon) pregnancy.
Source: Showtime – September 2, 2011