We all have that friend—the one who doesn't quite belong. Dinah Marshall is that person and knows it. After someone drops out, she's invited to spend the weekend at a luxury holiday home with women she's known since university. However, the gulf between them has widened since then, and Dinah is conscious of being the only one with no money, career, partner or children. Feeling like an outsider, she takes to snooping around the house.

When Vivienne Walker becomes one of the prime suspects in a murder that sends shockwaves through the community, her guarded secrets begin to unravel. As investigators dig deeper, the cracks in Vivienne’s carefully crafted life begin to show, and the dark truths about her past start to emerge.

When you return from a work trip to find your husband dead in the pond, it’s best not to call him a liar and a cheat in front of the cops. Especially when you’ve spent the last few years telling anyone who’ll listen that you sometimes fantasize about killing him. It makes you look kind of, well, guilty.

When Alex invites new to the neighborhood Cleo Baird to join her tight-knit playgroup, Cleo can’t believe her luck and knows she has just the “in” she’s been hoping for. But it isn’t just luck. As the women grow closer and Alex shares more secrets, she doesn’t realize Cleo is keeping secrets of her own. It’s no coincidence that Cleo and her daughter moved to Oak Valley. Cleo came to town with a specific goal in mind: to destroy Alex’s enviable and seemingly perfect life.

Stay-at-home mom Eloise Williams is PTO president and a respected local philanthropist who sits on the boards of many distinguished charities. In addition to being a doting wife and mother, she is also a serial killer.

Thirty-six-year-old stay-at-home soccer mom Kate Burke is happily married to Matt Parsons, although their marriage looks very different behind closed doors. Kate is no longer interested in having sex with her husband. So, while they still love each other madly, they make an arrangement: Matt can have one-night stands with other women on work trips, but when he returns home, he has to tell Kate about them—every juicy detail.

When Hannah and Jasper move to Silverbanks, a luxury gated neighbourhood, it’s a dream come true. This house, with its floor-to-ceiling glass doors, direct access to the sandy beach, and close-knit, caring community, will be the perfect place to raise their precious daughter, Pia. And then Hannah meets her next-door neighbour. The flicker of recognition in his eyes only lasts for a second, but it’s enough. Suddenly, her safe haven has become the most dangerous place she could be. Unless she does something about it.

How well do you really know your own family? The wife: Eve is desperate for her life to be perfect. Living in a beautiful house, with gorgeous views of the countryside, is all she’s ever wanted. And she’ll do whatever it takes to hold onto her dream life. The son: Joe is a model student; he never puts a foot wrong. He knows his mother wouldn’t tolerate it. Until the night of his sixteenth birthday party, when things go horribly wrong and someone in the house is left fighting for their life. As the blue flashing lights of the police and ambulance arrive, all eyes are on the Griffiths family.

Wife: I couldn’t be prouder of my charming husband and quiet and kind son. I’ve poured everything into my little family, so I choose to ignore my husband’s late-night phone calls and wandering eye. I won’t let anything ruin my perfect life…

I used to have it all. My ex-boyfriend and I were madly in love and dreamed of starting a family. When I found out I couldn’t have children, it broke me. Now, at my job at the fertility clinic, I give other couples what I could never have. The day my ex and his new wife walk into my clinic, my heart shatters all over again. He’s back. Now, I stand here with a syringe trembling in my hand and an impossible decision to make: Do I help them conceive a child—even though I know he’s keeping a dangerous secret? Or do I protect his wife—my patient, now—and take what’s rightfully mine?

Stephanie and Jessica have nothing and everything in common. The two women don’t know each other but are on the same plane heading to California. Stephanie is on a business trip and Jasmine is fleeing an abusive relationship. After a few days, they text their friends the same exact messages about the same man—the messages becoming stranger and more erratic. And then the two women vanish. The texts go silent, the red flags go up, and the panic sets in. When Stephanie and Jasmine are each declared missing and in danger, it begs the questions: Who is Trent McCarthy?

On the last day of school, my friends and I gather on the beach to celebrate the long summer ahead. Sipping cans of warm cider and watching campfire embers dance into the inky sky, I don’t think I’ve ever been happier. Until a scream pierces the night. The next morning, we find shy newcomer Pippa on the beach, sandflies gathering on her lifeless body…

What you see isn’t always what you get. Take Ainsley. The gorgeous mother of two lives a picture-perfect life with her husband, Ben—aspiring politician and heir to a candy fortune—in suburban Washington, DC. But in reality, Ainsley has no idea what she’s doing and is terrified someone will figure out who she really is and where she came from.

Standing in my bathroom, the luxurious marble tiles cool under my feet, I stare at the test in my trembling hand. The second line is unmistakable: I’m pregnant. This is all my husband Theo and I have ever wanted, but I didn’t think it was possible. I should be excited, but all I can think about is telling my stepdaughter. Because Ellie’s always hated me, ever since she realised it was no longer just her and Theo. Now she’s seventeen, beautiful and smart–smart enough to see through me. And if Ellie decided to uncover my secrets, it wouldn’t be just my marriage at stake… it would be my life.

A young nanny who plunged to her death, or was she pushed? A nine-year-old girl who collects sharp objects and refuses to speak. A lawyer whose job it is to uncover who in the family is a victim and who is a murderer. But how can you find out the truth when everyone here is lying? Rose Barclay is a nine-year-old girl who witnessed the possible murder of her nanny—in the midst of her parent's bitter divorce—and immediately stopped speaking.

Two little girls stand with their heads bowed in my living room. I’m told they’re my granddaughters. Daisy is nine, and Alice seven. Daisy is the spitting image of her mother. This is the first time I’ve met them since my daughter and I fell out after she married that waste of space, Vince. They’ve come to live with me because their mother — my daughter — was murdered. In her own home while they slept close by. I think Vince killed her. But the police can’t prove it. I’ve always known he was no good. He treated my daughter like dirt. I said he’d cheat on her — but she wouldn’t listen.

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.

Who is Audrey Hoedemaker? It's a question her sister Maureen has heard more times than she can count, and she doesn't know what the short answer would be. Little sister, troubled teen, backpacker, musical theatre coach, con artist, childcare worker. Murderer. A tragic, traumatic childhood casts a long shadow on the Hoedemaker sisters. Maureen has worked hard to move beyond the violence of the past and build a good, honest life for herself. Audrey, however, just can't seem to do the same, careening from one state of chaos to another.

After the killing of a prominent mob lawyer, NYPD homicide detectives Jacob Jackson and Caitlin Grimes start receive chilling, written “rules” for how to commit the perfect murder. "Rule number one for the perfect murder: Evidence is your enemy. Leave none behind." Jackson (Reid Scott) and Grimes (Cobie Smulders) race to find the killer, setting them on a collision course with the city’s crime underbelly, and a perpetrator who seems happy to toy with them. “Rule number two. No crimes of passion. The perfect murder is always business, never pleasure.”

Kidnappers grabbed Jenna in broad daylight, right in front of her children and their horrified classmates. Her family was issued an insane ransom demand: $25 million in cash and jewels, payable by the end of the school day, otherwise they’ll never see her again. As Jenna’s mother scrambles to gather the money, detectives Mo Butler and George Ortega follow the trail of the kidnappers, which will lead them through a sordid landscape of jealous lovers, broken dreamers, and twisted schemers. But every second counts, and there’s one thing Jenna Wade doesn’t have: very much time.