Marcia Gay Harden is to join the cast of The Newsroom.

The Oscar-winning actress will replace Rosemarie DeWitt, who was confirmed to be leaving Aaron Sorkin's HBO drama earlier this week.

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Harden will replace DeWitt in the role of Rebecca Halliday, a lawyer who defends the Atlantis Cable News channel during a lawsuit for wrongful dismissal.

TVLine reports that Harden will reshoot the scenes that DeWitt has already filmed.

HBO confirmed that DeWitt's departure has come about because of a scheduling conflict, saying in a statement: "As the production schedule for season two of The Newsroom has shifted, Rosemarie DeWitt... will no longer be able to continue in her role."

Further new cast additions on The Newsroom include Patton Oswalt, who has been cast as a senior executive at Atlantis, and Meryl Streep's daughter Grace Gummer, who joins the cast as new reporter Hallie Shea.

What to Read Next

The Newsroom's second season is slated to premiere this June on HBO. The show airs on Sky Atlantic in the UK.

Watch a behind-the-scenes featurette about The Newsroom below:

Headshot of Kate Goodacre

Kate (they/she) is a freelance writer, editor, digital editorial trainer and data technician who first joined Digital Spy as an overnight freelance sub-editor in January 2011, after studying a postgraduate diploma in journalism at Salford University while working part-time as a social researcher.
In July 2013, Kate joined the DS staff team as chief sub-editor and following six years as the site's managing editor, their role expanded to incorporate Hearst UK's entertainment portfolio (including Digital Spy and its sibling titles Best and Inside Soap) between late 2024 and early 2026.
  Kate has worked as a writer and editor since 2006, with bylines syndicated across the Hearst network and at organisations including Metro. They started their career as a TV production runner for the BBC and contributed to various music websites, blogs and zines while based in Manchester.
  During her time at DS, Kate has previously been a freelance sub-editor and chief sub-editor.
  Kate's team at Digital Spy were proudly nominated in the Best Subbing/Production Team category at the BSME Talent Awards 2022. Over the years, she has contributed to coverage of many, many Prime Days and Black Friday/Cyber Monday, and was part of the team that launched the DS weekly TV newsletter in November 2019 – followed by the Top of the Shops e-commerce newsletter in May 2024.
   Kate's screen passions include Taskmaster (their biggest career regret remains turning down the opportunity to visit the house), nature documentaries, and live sport (up there with the greatest of all soap operas although if asked to choose, it's Corrie… every time).
   Her highlights while working at DS have included interviewing Stevie Nicks on the red carpet for her documentary In Your Dreams, sitting at a press roundtable with Formula 1 commentary icon Murray Walker, watching a life-sized LEGO car being driven around Silverstone, writing an album-by-album retrospective of Lady Gaga's genre-defying career for Living Legends, and raising awareness of receiving and understanding a late-in-life ADHD diagnosis through the lens of Bianca and Freddie's EastEnders storyline.
 Upon remembering to log off the internet, Kate enjoys live theatre, dance and comedy, appreciating nature, baking (badly), tending a recently-rented allotment (equally badly) and pampering one very spoiled rescue cat named Jolene.
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