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Adult Shauna
Melanie Lynskey
Played by Melanie Lynskey

Now married to the former prom king, Shauna is one of a handful of survivors of the plane crash. Twenty-five years later, she's on a mission to reclaim her agency -- and her life-- while doing everything in her power to keep her darkest secrets safe.

New Zealand born Melanie Lynskey's first role came in 1994 with her award-winning performance in Peter Jackson's Heavenly Creatures opposite Kate Winslet. Since then, she has amassed a number of credits in both features and television. Her film credits include Steven Soderbergh's The Informant, Tom McCarthy's Win Win, Billy Ray's Shattered Glass, Sam Mendes' Away We Go, Jason Reitman's Up in the Air, Andy Tennant's Ever After and Sweet Home Alabama, Jamie Babbit’s But I’m a Cheerleader, Clint Eastwood's Flags of Our Fathers, Joe Swanberg’s Happy Christmas, and Angus MacLachlan's Goodbye To All That. 

In 2012, Lynskey played the lead role in Todd Louiso's film Hello I Must Be Going. The film opened the 2012 Sundance Film Festival and was rated one of the “Top Ten Independent Films” of the year by the National Board of Review. Lynskey’s performance earned her critical praise and a nomination for a 2012 Gotham Independent Film Award in the category of Breakthrough Actor. 

At Sundance in 2016, Lynskey won the US Special Jury Prize for Individual Performance for her portrayal of a meddling alcoholic in Clea DuVall’s debut feature, The Intervention. 

Lynskey also starred opposite Elijah Wood in Macon Blair’s I Don't Feel at Home in This World Anymore, which won the Grand Jury Prize at Sundance. Lynskey was nominated for a 2017 Gotham Award for Best Actress for her role in the film. 

On television, Lynskey most recently appeared in the Hulu series Castle Rock, opposite André Holland, Sissy Spacek and Bill Skarsgård. She also starred in the Duplass brothers' critically acclaimed HBO show, Togetherness, for which she was nominated for a Critic's Choice Award; and she voiced the character Beatrice in Cartoon Network's Over the Garden Wall, which won the 2015 Emmy for Best Animated Program. She also starred opposite Anthony LaPaglia in the award-winning Australian SBS TV drama Sunshine Kings. 

From 2003-2015, Lynskey had a popular recurring role as Rose in the hit CBS show Two and a Half Men and in 2020, Lynskey starred in the FX limited series Mrs. America opposite Cate Blanchett.