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Cast of The Big C – Complete Guide to Every Actor and Character

Arthur Howard Clarke • 2026-05-23 • Reviewed by Hanna Berg

When a beloved show lands on a new streaming platform, audiences often return to revisit the story and the people who brought it to life. The Big C, the darkly comic drama that aired on Showtime from 2010 to 2013, follows Cathy Jamison, a schoolteacher in suburban Minneapolis who makes bold choices after a terminal cancer diagnosis. The series balanced sharp humor with genuine emotional weight, thanks largely to a well-chosen ensemble. As of November 2025, all four seasons are available on Netflix in the United States, sparking fresh interest in the cast and where they are today.

The show’s blend of family dysfunction, medical reality, and absurdist comedy earned it a loyal following. For anyone catching up or discovering it for the first time, understanding the full cast of The Big C — from the core Jamison family to the memorable guest stars — adds depth to every episode.


The Big C Cast Now: Where Are They in 2025?

The most common question from viewers returning to The Big C after its Netflix arrival is: what happened to the actors? Here is a quick overview of the show’s key facts, followed by detailed updates on the principal performers.

  • Genre: Comedy-drama
  • Seasons: 4
  • Episodes: 39
  • Original Network: Showtime (2010–2013)

Key Insights About the Cast

  • The Big C ran for four critically acclaimed seasons from 2010 to 2013 on Showtime.
  • The show is now available for streaming on Netflix in the US as of November 2025, sparking renewed interest.
  • Gabriel Basso, who played Cathy’s son Adam, later starred in The Night Agent and Hillbilly Elegy.
  • Laura Linney’s performance as Cathy earned multiple Emmy nominations.
  • Series creator Darlene Hunt ended the show after four seasons with a planned finale.

Quick Reference: Main Cast and Their Other Notable Roles

Character Actor Seasons Notable Other Works
Cathy Jamison Laura Linney 1–4 Ozark, The Truman Show
Paul Jamison Oliver Platt 1–4 The Bear, Chicago Med
Adam Jamison Gabriel Basso 1–4 The Night Agent, Hillbilly Elegy
Sean Tolkey John Benjamin Hickey 1–4 The Talented Mr. Ripley, Manhattan
Marlene Phyllis Somerville 1–4 Little Children, The Curious Case of Benjamin Button
Andrea Jackson Gabourey Sidibe 1–4 Precious, Empire
Dr. Todd Mauer Reid Scott 1–4 (recurring) Veep, The Marvelous Mrs. Maisel
Dr. Atticus Sherman Alan Alda 4 M*A*S*H, The West Wing
Joy Kleinman Susan Sarandon 4 Thelma & Louise, Dead Man Walking
What About the Supporting Cast?

Beyond the main ensemble, The Big C featured a rotating group of well-known actors in guest and recurring roles. These included Idris Elba as Lenny, Cynthia Nixon as Rebecca, Hugh Dancy as Lee Fallon, and Brian Cox as Donald Tolkey. Their appearances added both depth and prestige to the series, as noted by TV Guide’s cast listing.

The Big C Cast by Season: Season 1, 2, 3, and 4

The core four — Laura Linney, Oliver Platt, Gabriel Basso, and John Benjamin Hickey — appeared in all 39 episodes. The supporting cast changed somewhat as the story evolved. Below is a season-by-season look at the most prominent players.

Season 1 (2010)

The series introduced Cathy Jamison as she begins treatment and decides to live boldly. Alongside the Jamison family, early episodes featured Phyllis Somerville as quirky neighbor Marlene and Gabourey Sidibe as student Andrea. Reid Scott appeared as Dr. Todd Mauer.

Season 2 (2011)

The second season deepened Cathy’s relationships. Hugh Dancy joined as Lee Fallon, a love interest, and Cynthia Nixon appeared as Rebecca. The medical storyline continued with Dr. Mauer playing a larger role. IMDB’s full cast page lists all recurring performers.

Season 3 (2012)

Season three introduced new dynamics, including the arrival of Cathy’s father Donald Tolkey, played by Brian Cox (and in other appearances by Brian Dennehy). Boyd Holbrook appeared as Mykail. The season maintained the balance of dark humor and drama.

Season 4 (2013)

The final season, consisting of only 4 episodes, brought the story to a planned conclusion. Alan Alda joined as Dr. Atticus Sherman, and Susan Sarandon appeared as Joy Kleinman. The emotional weight of the finale was widely praised.

Final Season Note

Each season of The Big C aired during a different era of TV. The four-episode final season was intentionally brief, allowing the creative team to craft a tight, emotional ending without filler.

Is There a Season 4 of The Big C?

Yes. The Big C has exactly four seasons, and the fourth season aired from July 25 to August 29, 2013. The show ended with a definitive series finale. No season 5 was ever produced, and no revival or reboot has been announced as of 2025. The episode count is often listed as 39 or 40; most official sources, including Wikipedia, count 39 episodes across four seasons.

Where to Watch The Big C in 2025

Streaming rights shift frequently, but as of late 2025, The Big C is available to stream on Netflix in the United States. The addition was announced via Netflix Tudum in November 2025. The series can also be found on Showtime’s own platforms and is available for digital purchase or rental through services like Amazon Prime Video, Apple TV, and Vudu.

Streaming Availability Varies by Region

While Netflix carries the show in the US, other countries may not have the same rights. Viewers outside the US should check local Netflix catalogs or consider purchase/rental options. Always verify current availability on each platform.

When Did The Big C Air? A Complete Timeline

  1. : The Big C premieres on Showtime (Season 1).
  2. : Season 2 premieres.
  3. : Season 3 premieres.
  4. : Season 4 (final season) premieres.
  5. : Series finale airs.
  6. : The Big C added to Netflix streaming (per Tudum article).

Is The Big C Still on Netflix? What We Know and What’s Unclear

Some viewers wonder whether the show has more seasons or if it will be removed. The table below separates established facts from areas that remain uncertain.

Established Information What Remains Unclear
The Big C has exactly 4 seasons (39 episodes). Whether Netflix will retain the show long-term or remove it after a period.
The main cast includes Laura Linney, Oliver Platt, Gabriel Basso, and John Benjamin Hickey. No reboot or revival has been announced as of 2025.
Adam Jamison is played by Gabriel Basso. The show is not available on all streaming platforms; only Netflix and purchase/rental options exist.
The show is currently streaming on Netflix in the US. International streaming availability varies and is subject to change.

Why Is The Big C Still Popular Today?

Renewed interest in The Big C is tied directly to its Netflix debut in November 2025. The show broke ground by blending comedy with a serious cancer diagnosis, a format that paved the way for later dramedies like Dead to Me and After Life. Laura Linney’s central performance is frequently cited as one of television’s finest in that decade. Fans often search for cast updates when a show hits streaming, wanting to know what the actors are doing now — a natural curiosity that drives continued engagement. For those wanting to learn more, Here’s a researched overview of The Big C focused on cast, seasons, episodes, streaming, and what the actors are doing now.

Where Does the Cast Information Come From?

The cast details in this article are drawn from reliable public sources, including official networks and data aggregators. The following sources were consulted:

  • IMDB – The Big C (cast credits and filmography)
  • Wikipedia – The Big C (TV series) (episode count and production history)
  • TV Guide – The Big C cast (role listings)
  • Rotten Tomatoes – The Big C Season 1 (critical reception and crew)
  • Netflix Tudum (official streaming announcement and cast bios)

“Laura Linney (Ozark) stars as Cathy, a high school teacher who decides to live life on her own terms after a cancer diagnosis.”

— Netflix Tudum

“The Big C ran for four seasons from 2010 to 2013 on Showtime.”

— Wikipedia

The Big C Cast: Key Takeaways

The complete cast of The Big C — led by Laura Linney, Oliver Platt, Gabriel Basso, and John Benjamin Hickey — remains a standout example of ensemble storytelling in modern television. With all four seasons now streaming on Netflix, new viewers can discover why the show earned its place in TV history, and returning fans can catch up with where the actors have landed since. For a deeper dive, explore Here’s a researched overview of The Big C focused on cast, seasons, episodes, streaming, and what the actors are doing now.

Frequently Asked Questions About The Cast of The Big C

Who plays Cathy Jamison in The Big C?

Laura Linney portrays Cathy Jamison, the main character, throughout all four seasons.

Is Gabriel Basso the actor who plays Adam?

Yes, Gabriel Basso plays Adam Jamison, Cathy and Paul’s son. He later starred in The Night Agent.

Was Idris Elba in The Big C?

Yes, Idris Elba made a guest appearance as Lenny in a season 2 episode.

How many episodes are in The Big C?

The series has 39 episodes across four seasons, with the final season consisting of 4 episodes.

Did The Big C win any awards?

Laura Linney received multiple Emmy nominations for her performance. The show was also nominated for a Golden Globe.

Can I watch The Big C on Netflix?

Yes, as of November 2025, all four seasons are available for streaming on Netflix in the United States.

Is there a season 5 of The Big C?

No. The show concluded with season 4 in 2013. No season 5 or revival has been announced.

What is Oliver Platt doing now?

Oliver Platt continues to act in film and television, with recent roles in The Bear and Chicago Med.

Who played Dr. Atticus Sherman?

Alan Alda played Dr. Atticus Sherman in the fourth season. He remains active in acting and writing.

Was Susan Sarandon in The Big C?

Yes, Susan Sarandon appeared as Joy Kleinman in the final season. She continues to be a major film and television presence.


Arthur Howard Clarke

About the author

Arthur Howard Clarke

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