"Riveting and brilliantly structured, A Simple Favor is an edge-of-your seat domestic thriller about a missing wife and mother that relies on a rotating cast of unreliable narrators to ingeniously examine the cost of competitive mom-friends, the toll of ordinary marital discontent and the fallacy of the picture-perfect, suburban family."—Kimberly McCreight, New York Times bestselling author

She’s your best friend.

She knows all your secrets.

That’s why she’s so dangerous.

A single mother's life is turned upside down when her best friend vanishes in this chilling debut thriller in the vein of Gone Girl and The Girl on the Train.

It starts with a simple favor—an ordinary kindness mothers do for one another. When her best friend, Emily, asks Stephanie to pick up her son Nicky after school, she happily says yes. Nicky and her son, Miles, are classmates and best friends, and the five-year-olds love being together—just like she and Emily. A widow and stay-at-home mommy blogger living in woodsy suburban Connecticut, Stephanie was lonely until she met Emily, a sophisticated PR executive whose job in Manhattan demands so much of her time.

But Emily doesn’t come back. She doesn’t answer calls or return texts. Stephanie knows something is terribly wrong—Emily would never leave Nicky, no matter what the police say. Terrified, she reaches out to her blog readers for help. She also reaches out to Emily’s husband, the handsome, reticent Sean, offering emotional support. It’s the least she can do for her best friend. Then, she and Sean receive shocking news. Emily is dead. The nightmare of her disappearance is over.

Or is it? Because soon, Stephanie will begin to see that nothing—not friendship, love, or even an ordinary favor—is as simple as it seems.

A Simple Favor is a remarkable tale of psychological suspense—a clever and twisting free-fall of a ride filled with betrayals and reversals, twists and turns, secrets and revelations, love and loyalty, murder and revenge. Darcey Bell masterfully ratchets up the tension in a taut, unsettling, and completely absorbing story that holds you in its grip until the final page.

The perfect marriage? Or the perfect lie?

“A hair-raising debut, both unsettling and addictive...A chilling thriller that will keep you reading long into the night.” —Mary Kubica, New York Times and USA Today bestselling author of The Good Girl

“This is one readers won’t be able to put down.” —Booklist (starred review)

"A can’t-put-down psychological thriller.” —Library Journal (starred review)

“This debut is guaranteed to haunt you...Warning: brace yourself.” —Bustle (10 New Thrillers to Read This Summer)

“The sense of believably and terror that engulfs Behind Closed Doors doesn't waver.” —The Associated Press, picked up by The Washington Post

“This was one of the best and most terrifying psychological thrillers I have ever read.” —San Francisco Book Review

Everyone knows a couple like Jack and Grace. He has looks and wealth; she has charm and elegance. He’s a dedicated attorney who has never lost a case; she is a flawless homemaker, a masterful gardener and cook, and dotes on her disabled younger sister. Though they are still newlyweds, they seem to have it all. You might not want to like them, but you do. You’re hopelessly charmed by the ease and comfort of their home, by the graciousness of the dinner parties they throw. You’d like to get to know Grace better.

But it’s difficult, because you realize Jack and Grace are inseparable.

Some might call this true love. Others might wonder why Grace never answers the phone. Or why she can never meet for coffee, even though she doesn’t work. How she can cook such elaborate meals but remain so slim. Or why she never seems to take anything with her when she leaves the house, not even a pen. Or why there are such high-security metal shutters on all the downstairs windows.

Some might wonder what’s really going on once the dinner party is over, and the front door has closed.

From bestselling author B. A. Paris comes the gripping thriller and international phenomenon Behind Closed Doors.