Showtime has debuted the first trailer for the final season of The Big C, which kicks off with the Season 4 Premiere Sunday, April 29. Laura Linney is back as cancer survivor Cathy Jamison, who has quite a long road ahead of her in these last four episodes. Back in July, Showtime president David Nevins would not clarify whether or not Cathy will succumb to her cancer in the final season. However, as you can see in the video, her cancer is not going away anytime soon, in what will surely be a riveting swan song for this award-winning series. Take a look at the first footage from this four-episode The Big C Season 4.