The correspondence between Carrie Allsop and David Mayer reveals, piece by piece, the painful details of a devastating affair between their spouses. With each commiserating scratch of the pen, they confess their fears and bare their souls. They share the bewilderment over how things went so wrong and come to wonder where to go from here. Told entirely through the letters of two comforting strangers and those of two illicit lovers, Evidence of the Affair explores the complex nature of the heart. And ultimately, for one woman, how liberating it can be when it’s broken.

Isabel Gibson has all but perfected the art of forgetting. She’s a New Yorker now, with nothing left to tie her to Brinkley’s Island, Maine. Her parents are gone, the family bookstore is all but bankrupt, and her sister, Sophie, will probably never speak to her again. But when a mysterious letter arrives in her mailbox, Isabel feels herself drawn to the past. After years of fighting for her independence, she dreads the thought of going back to the island.

When the Dickenson clan sits down for Thanksgiving dinner in 2016, it is the last holiday where their tight-knit family will ever be the same. Oldest brother Pete and his wife are expecting their first child. Youngest sibling Sophie is too busy running her restaurant. The Little Plum, to bother with any kind of social life. And middle child Charlie’s happy, uncomplicated life as a midwestern science professor is upended when his wife Annette is diagnosed with a terminal illness. Knowing this will be her last Thanksgiving, Annette asks Sophie to look after Charlie after she’s gone.

It’s Christmas Eve and Stella Hansen is broke. She is so broke that despite working two jobs, she can’t even afford a present for her husband on their first Christmas as man and wife. But then a mysterious storekeeper at a pawn shop offers Stella an intriguing trade. Stella wants more than anything to buy her husband the Christmas gift of his dreams. But will it come at a terrible price?

Celeste Mason is the Pinterest stay-at-home supermom of other mothers’ nightmares. Despite her all-organic, SunButter-loving, free-range kids, her immaculate home, and her volunteering awards, she still has time to relax with a nice glass of pinot at the end of the day. The only thing that ruins it all is her workaholic, career-obsessed neighbor, who makes no secret of what she thinks of Celeste’s life choices every chance she gets.

Overworked and underappreciated, single mom Amy Byler needs a break. So when the guilt-ridden husband who abandoned her shows up and offers to take care of their kids for the summer, she accepts his offer and escapes rural Pennsylvania for New York City. Usually grounded and mild mannered, Amy finally lets her hair down in the city that never sleeps. She discovers a life filled with culture, sophistication, and - with a little encouragement from her friends - a few blind dates.

As one of the most popular influencers on social media, Mia Bell has lived her life online for years. With her celebrity dog and gorgeous fiancé, she is planning the ultimate virtual wedding - expensive, elaborate, and entirely paid for by sponsors. But off-camera, her world is far from picture perfect. After being jilted by her fiancé and faking her nuptials to please her sponsors, Mia finally has had enough. She heaves her phone off a cliff, ready to live - and maybe find love - offline for a change.

As a teenage runaway and child of an addict, Christy-Lynn learned the hard way that no address was permanent, and no promise sacred. For a while, she found a safe haven in her marriage to bestselling crime novelist Stephen Ludlow - until his car skidded into Echo Bay. But Stephen’s wasn’t the only body pulled from the icy waters that night. When details about a mysterious violet-eyed blonde become public, a media circus ensues, and Christy-Lynn runs again.

Sarah Morgan is a successful and powerful defense attorney in Washington D.C. At 33 years old, she is a named partner at her firm and life is going exactly how she planned. The same cannot be said for her husband, Adam. He is a struggling writer who has had little success in his career. He begins to tire of his and Sarah’s relationship as she is constantly working. Out in the secluded woods, at Adam and Sarah’s second home, Adam engages in a passionate affair with Kelly Summers. Then, one morning everything changes. Adam is arrested for Kelly’s murder.

After the untimely deaths of her aunt and mother, young Riley Mays moved from Chicago to her cousins’ Wisconsin farm. Here she found solace in caring for her extraordinary adoptive brother, exploring the surrounding wild nature, and gazing at the mystical moon - a private refuge in which she hides from her most painful memories. But ten years later, now twenty-one, Riley feels too confined by the protective walls she’s erected around herself. When a stranger enters her family’s remote world, Riley senses something he’s hiding, a desire to escape that she understands well.

Alexis Spencer thinks she has it all figured out. Even when life gets her down, she’s never too far away from another inspirational quote to rationalize her failures and ignore all her problems. Her boyfriend breaks it off, she loses her job, her closest friends are a distant memory, and her college debt is still as high as the day she left. In typical fashion, she blames the world for her problems, including her 18-year-old self who should have just tried harder and put their life on a better track.

Lowen Ashleigh is a struggling writer on the brink of financial ruin when she accepts the job offer of a lifetime. Jeremy Crawford, husband of best-selling author Verity Crawford, has hired Lowen to complete the remaining books in a successful series his injured wife is unable to finish. Lowen arrives at the Crawford home, ready to sort through years of Verity's notes and outlines, hoping to find enough material to get her started. What Lowen doesn't expect to uncover in the chaotic office is an unfinished autobiography Verity never intended for anyone to read.

One unbearable mistake at the edge of the forest. In a moment of crisis, Ellis Abbey leaves her daughter, Viola, unattended - for just a few minutes. But when she returns, Viola is gone. A breaking point in an already fractured marriage, Viola’s abduction causes Ellis to disappear as well - into grief, guilt, and addiction. Convinced she can only do more harm to her family, Ellis leaves her husband and young sons, burying her desperate ache for her children deeper with every step into the mountain wildernesses she treks alone.

Erika Cass has a perfect family and a perfect life. Until the evening when two detectives show up at her front door. A high school girl has vanished from Erika's quiet suburban neighborhood. The police suspect the worst - murder. And Erika's teenage son, Liam, was the last person to see the girl alive. Erika has always sensed something dark and disturbed in her seemingly perfect older child. She wants to believe he's innocent, but as the evidence mounts, she can't deny the truth - Liam may have done the unthinkable.

Victoria Barnett has it all: a great career as a nurse practitioner, a handsome and loving husband, a beautiful home in the suburbs, and a plan to fill it with children. Life is perfect—or so it seems. Then she’s in a terrible accident...and everything falls apart. Now Victoria is unable to walk. She can’t feed or dress herself. She can’t even speak. She is confined to the top floor of her house with 24-hour care.

Lizzy Moon never wanted Moon Girl Farm. Eight years ago, she left the land that nine generations of gifted healers had tended, determined to distance herself from the whispers about her family’s strange legacy. But when her beloved grandmother Althea dies, Lizzy must return and face the tragedy still hanging over the farm’s withered lavender fields: the unsolved murders of two young girls, and the cruel accusations that followed Althea to her grave.

After serving five years in prison for a tragic mistake, Kenna Rowan returns to the town where it all went wrong, hoping to reunite with her four-year-old daughter. But the bridges Kenna burned are proving impossible to rebuild. Everyone in her daughter’s life is determined to shut Kenna out, no matter how hard she works to prove herself. The only person who hasn’t closed the door on her completely is Ledger Ward, a local bar owner and one of the few remaining links to Kenna’s daughter.

Morgan is determined to prevent her daughter from making the same mistakes she did. By getting pregnant and married way too young, Morgan put her own dreams on hold. Clara doesn’t want to follow in her mother’s footsteps. Her predictable mother doesn’t have a spontaneous bone in her body.

Samson and Beyah have nothing in common on the surface. She comes from a life of poverty and neglect; he comes from a family of wealth and privilege. But one thing they do have in common is that they're both drawn to sad things. Which means they're drawn to each other. Beyah and Samson agree to stay in the shallow end of a summer fling. What Beyah doesn't realize is that a rip current is coming, and it's about to drag her heart out to sea.

Darby Thorne is a college student stranded by a blizzard at a highway rest stop in the middle of nowhere. She’s on the way home to see her sick mother. She’ll have to spend the night in the rest stop with four complete strangers. Then she stumbles across a little girl locked inside one of their parked cars. There is no cell phone reception, no telephone, no way out because of the snow, and she doesn’t know which one of the other travelers is the kidnapper.

Newlyweds Tricia and Ethan are searching for the house of their dreams. But when they visit the remote manor that once belonged to Dr. Adrienne Hale, a renowned psychiatrist who vanished without a trace four years earlier, a violent winter storm traps them at the estate… with no chance of escape until the blizzard comes to an end. In search of a book to keep her entertained until the snow abates, Tricia happens upon a secret room. One that contains audio transcripts from every single patient Dr. Hale has ever interviewed.

Twenty-two years of marriage, and all Becca Larkin’s divorce settlement includes is a live-aboard sailboat and a huge helping of heartache. So when normally cautious Becca proposes a girls’ trip with her daughter, Liv, boating from Maine to a ready buyer for the boat in Miami, it seems like a recipe for a fun summer and a fresh start. After all, how hard can this sailing thing be?

Beth and Ian are desperate to have a child. So much so that they decide to sell his family cabin in upstate New York to pay for IVF. When they arrive at the cabin, they meet Ryan, the caretaker. But Ryan is not who he says he is… He’s here because he knows Beth has a dark secret. And now he intends to use it against her. He threatens to tell Ian everything about Beth's past unless she does exactly what he says.

Buckhead isn’t a place you live, it’s a place you survive. And that applies even to the wealthy housewives that have it all. Fancy cars, designer clothes, and daily salon appointments aren’t nearly enough to keep them fulfilled and happy. Because in this town, privilege and opulence go hand in hand with betrayal and revenge. Jenny, the owner of Glow, an exclusive membership-only beauty salon, knows that better than anyone, because she knows everything about these housewives—down to each individual strand of hair.

Tess Strebel can’t recognize her own face. She can’t recognize her home. Her bedroom is unfamiliar. And she can’t remember the handsome stranger lying next to her in bed. A stranger who claims he’s her husband. Tess reads a letter in her own handwriting, composed during a rare lucid day, explaining her life as it now exists: she was in a terrible car accident one year ago. Every morning, she wakes up unable to remember most of the last decade. Including her own wedding.