Hugh Dancy and Parker Posey have signed on as guest stars for the second season of the Showtime dramedy "The Big C."
Dancy will star in at least six episodes as Lee, a charming fellow cancer patient who befriends Cathy (Laura Linney) as they take part in an experimental drug trial. Posey has signed on for four episodes as Poppy, an older woman who develops an unlikely relationship with Adam (Gabriel Basso), Cathy's son.
Alan Alda will also join the series this season as Dr. Atticus Sherman, Cathy’s oncologist.
The series will premiere Monday, June 27, following "Weeds."