EXCLUSIVE: Bestselling author Kimberly McCreight is extending her streak of all of her books getting optioned for film or TV. Her upcoming novel Someone Else’s Husband, which has made several lists of Summer 2026’s most anticipated titles, has been preemptively acquired by Lionsgate Television and 3 Arts Entertainment ahead of its June 16 release by Knopf.

McCreight will co-write the adaptation and will serve as an executive producer alongside 3 Arts Partner Erwin Stoff. The plan is to attach a showrunner and take the project to market soon.

Someone Else’s Husband is a psychological thriller that follows Gretchen Falk, a wealthy Park Avenue wife whose life begins to unravel after her husband Richard embarks on a climbing expedition to Mount Kilimanjaro where he meets and has an affair with an artist, Frankie. Weeks later, Frankie is murdered, and Richard is the prime suspect, forcing Gretchen to confront the reality of her husband’s life and her own.

“Someone Else’s Husband explores the complexities of love, loss, betrayal and the consequences of the secrets we keep,” said McCreight who used her own climbing trip to Kilimanjaro as inspiration for the book. “I’m thrilled to partner with Lionsgate Television and 3 Arts, whose track record of adapting bold, character-driven stories into propulsive series makes them the ideal team to bring this novel to the screen.”

Courtney Mock, SVP of Scripted Development, Lionsgate Television, is overseeing for the indie studio.

“This is an addictive, emotionally layered thriller with enormous series potential,” she said. “We’re excited to work alongside Kimberly and Erwin to bring this provocative, compelling story to viewers.”

This marks the latest collaboration between 3 Arts and majority owner Lionsgate. 3 Arts and Lionsgate TV are behind Netflix’s breakout The Hunting Wives, also based on a book, which Stoff executive produces. He also executive produces Fox’s hit medical drama Doc.

“Kimberly has created unforgettable characters and a world that audiences will immediately be drawn into,” Stoff said. “It’s the kind of emotionally charged thriller that sparks conversation, keeps audiences guessing and has all the ingredients of a must-watch television series.”

McCreight is the author of Reconstructing Amelia, Where They Found Her, A Good Marriage, Friends Like These, Like Mother, Like Daughter, and The Outliers trilogy. A Good Marriage is set up at Amazon with Nicole Kidman executive producing under her Blossom Films banner. Friends Like These is in development at Amazon with Amblin. More than a decade ago, Lionsgate acquired the feature film rights to McCreight’s sci-fi YA trilogy The Outliers. She is repped by WME, Bob Bookman, and Victoria Cook of Frankfurt Kurnit Klein & Selz.

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