Greer Hendricks and Sarah Pekkanen

Best-Selling Authors of The Wife Between Us and An Anonymous Girl

Greer Hendricks and Sarah Pekkanen are the co-authors of An Anonymous Girl and The Wife Between Us, which spent 10 weeks on The New York Times bestseller list and is being published in 35 countries and counting. The Wife Between Us has been optioned by Steven Spielberg’s Amblin Entertainment, for which the authors will be writing the screenplay adaptation. An Anonymous Girl is being developed for TV, with Greer and Sarah executive producing. A former author-editor team (Greer edited Sarah’s seven bestselling solo novels before they became a writing duo), Greer and Sarah regularly headline festivals and literary events with audiences of up to 1,000. 


As an editor at Simon & Schuster for over two decades, Greer worked with authors including Marlo Thomas, Jessica Seinfeld, Lauren Weisberger, and Jennifer Weiner. Prior to her time in book publishing, she worked at Allure magazine and obtained her master’s in journalism from Columbia University.  Her writing has appeared in The New York Times and Publishers Weekly. She lives in Manhattan with her husband and two children.


Sarah is an award-winning former investigative reporter, feature writer, and magazine columnist whose work has appeared in dozens of publications including The Washington Post, USA Today, and The New Republic. She lives just outside of Washington, D.C. with her three sons.

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St. Martin's Press

Wealthy Washington suburbanites Marissa and Matthew Bishop seem to have it all—until Marissa is unfaithful.

St. Martin's Press

Looking to earn some easy cash, Jessica Farris agrees to be a test subject in a psychological study about ethics and morality.

St. Martin's Paperbacks

When you read this book, you will make many assumptions. You will assume you are reading about a jealous ex-wife.

St. Martin's Griffin

Shay Miller wants to find love, but it eludes her. She wants to be fulfilled, but her job is a dead end. She wants to belong, but her life is increasingly lonely.

The Power of Female Partnership As they both approached 50, Greer and Sarah collaborated to achieve their biggest dream - they co-wrote one of the most successful novels of 2018, The Wife Between Us (a 10-week New York Times bestseller) and signed a multi-book publishing deal. Better Together is their slogan (they have it on matching shirts) because neither one could have reached these professional heights on her own. They will talk about how other women, of all ages, can learn to harness the power of partnership - and create a shared space of “psychological safety” - to achieve their own lifelong goals.
In Conversation with Greer Hendricks and Sarah Pekkanen Greer and Sarah will deliver one of their trademark energetic, hilarious, and and honest talks about their origin story and their path through the world of high-stakes publishing and Hollywood.

An Anonymous Girl will be adapted into a television series on eONe. Vulture runs an article on An Anonymous Girl‘s book to television adaptation. The Washington Post interviewed Greer and Sarah for a story on writing duos. Read the review of An Anonymous Girl  Real Simple on. Bookish weighs in on January 2019 releases and puts An Anonymous Girl at the top. Glamour posted the best books of 2019 (so far) featuring An Anonymous Girl. Watch ABC-TV’S GMA DAY interview with Greer and Sarah. Read the Washington Post’s profile of Sarah Pekkanen. Refinery 29 names An Anonymous Girl one of the best books to read in January 2019. USA TODAY names An Anonymous Girl one of 5 new books not to miss. Lit Hub’s Crime Reads names An Anonymous Girl one of the best psychological thrillers of January 2019. The View’s Sarah Haines chose The Wife Between Us as one of her Ladies Get Lit picks. Check out this spotlight on Sarah and Greer in Publishers Weekly. The Wife Between Us has been optioned for a film! Check out the announcement here. The forthcoming An Anonymous Girl is being developed for TV, with Greer and Sarah executive producing! See the announcement here. Check out this interview with Greer and Sarah on Greer’s website. Listen to this interview with Greer and Sarah on the radio show Lori & Julia. Visit Sarah Pekkanen’s website and Greer Hendricks’ website. Follow Greer and Sarah on Twitter!

Praise for An Anonymous Girl "Slickly twisty...[with] gasp-worthy final twists...major league suspense."
- Publishers Weekly

"Masterfully escalates the suspense...a great follow-up."
- Booklist

"Hendricks and Pekkanen are at the top of their won't see the final twist coming."
- People magazine

"Meet the first great suspense thriller of 2019."
- Refinery29

Praise for The Wife Between Us "A fiendishly smart cat-and-mouse thriller"
New York Times Book Review

"[A] seamless thriller that will keep readers on their toes to the very end...Readers will enjoy the dizzying back-and-forth as they attempt to figure out just who to root for and as the suspense ratchets up to one hell of a conclusion."
― Booklist

"Readers who were enthralled by B.A. Paris’s Behind Closed Doors and Gillian Flynn’s Gone Girl will love the skewed psychology and shifting perspectives of this domestic thriller."
Library Journal, starred review

“[A] jaw-dropping psychological thriller. This is not another eye-rolling story about the jealous ex-wife stalking her replacement...Unforgettable twists lead to shocking revelations all the way through the epilogue.”
Publishers Weekly, starred review

"Buckle up, because you won't be able to put this one down."

"With multiple didn't-see-that-coming twists, this tome thrills."
Us Weekly