When Emily’s husband dies in a terrible accident, she’s not the only wife he leaves behind. Before their whirlwind romance and Emily’s discovery she was pregnant, Pete had been married to Caroline for more than 20 years. A devastating tragedy had torn them apart. But there was a part of Pete that had never fully left his first wife and a secret that would bind them together, forever. Finding herself lonely, heartbroken, and forced to face life and motherhood alone, Emily knows she needs someone she can trust and rely on. Even if it’s the woman her husband loved before her.

Will I have the chance to explain to little Erin why I had to go? Even if I do find the strength to return, what will my mother have told her? Only one person really knows what happened and why I had to do what I did. I know the truth will come out some day. I don’t expect forgiveness. The only thing I hope is that my family can survive the fallout....

When Hannah met David, it was love at first sight. They were married quickly, but she knew it was the right choice. They're always laughing, the passion is unmatched, and they want the same things. Most of all, they both want a family. For David, it's doubly important. He tragically lost his first wife, Katherine, several years before. Hannah is, he says, the person who saved him from his grief. Although his friends worried he was moving on too fast, and Hannah sometimes still feels a strange jealousy towards his first wife, deep down she knows she's meant to be his happily-ever-after.

"I would do anything for you to get well again, baby girl." It’s a promise. Even though I know it means asking her father for help, going back there, risking everything. Whatever the cost, there’s no hesitation in my mind. Because that’s what you do when you’re a mother. You put your child’s life before your own.

When Shelley first met Greg, her life had been full of possibility. A whirlwind romance, a dream wedding, moving into their first house together, thinking about starting a family.... But now, it’s 10 years since their wedding. Greg has gone. And there’s a room in the house where Shelley has shut a baby blanket away. She’s been managing to hide from her past. Until one day, everything changes. She sees the couple moving in next door, giggling as they walk up the path to their new home. The woman is pregnant. It’s like she has everything that Shelley has lost.

It is past 10 o’clock on a cold Friday night when Rebecca and her husband Jack’s doorbell rings. Outside is a woman who introduces herself as Jack’s ex-girlfriend, Cara. And she’s holding the hand of a shivering, blue-eyed, four-year-old girl who she claims is Jack’s daughter. Rebecca is shocked to discover he has a child from his last relationship - even one he hadn’t known about. Because becoming parents isn’t part of their life plan.

Cate grips the note with trembling hands, looking down at the delicate bundle on her doorstep. As she reaches down to the baby, she knows she has finally got everything she’s ever wished for. But is he hers to take? Cate tries not to cry as she closes the door on the nursery room once again. All she has ever wanted is to be a mother. Cursed with a medical condition that means she is unable to have children, her only option is to wait for a call from the adoption center. But that call feels like a lifetime away.

Damian is just seven when he is taken in by foster carer Cathy Glass. His mother, Rachel, loves her three young children dearly, but she is vulnerable, naïve and unable to cope on her own. Cathy sets about helping Damian overcome his eating issues, with the hope that he will eventually return home. But when Rachel’s new boyfriend, Troy, arrives on the scene, Cathy becomes deeply concerned. She soon realises that Damian and his siblings are in great danger.

My darling little boy Albie adores playing at our new neighbours’ house. And after the terrible year we’ve had, I feel so lucky that we can start over in this perfect place, with new friends who treat Albie like the son they never had. He can’t stop talking about the tree house they’re building him, and the cookies they bake together. But as time passes, something starts to feel wrong. Why don’t they ever open the front door more than a crack? They told me they had no children so who does the small pink tricycle I saw in their hall belong to?

It’s a warm, early summer’s evening, when Mia’s doorbell rings unexpectedly. She opens the door to see the silhouette of a teenage girl, standing in the shadow beyond the porch light - and in an instant, she realizes who it is. Daisy, the daughter she gave up as a baby. She says she has a terrible secret. And she believes the only person who can help her is Mia. Her birth mother. Mia, however, has secrets of her own. Ones that she is afraid to let Daisy or anyone else know.

The doorbell rings, just days after my beloved husband’s sudden death. I don’t recognise the woman on our doorstep, with her blonde highlights, a diamond bracelet identical to my own and a bouncing baby boy in her arms. As I show her inside, I notice her eyes grow wide as she takes in our spacious hallway, and the big squashy sofas that we all used to pile on. She glances at the silver-framed family photos and my little daughter hiding behind my skirts. She looks at me, her blue eyes serious. ‘I’m sorry’ she says. ‘I am your husband’s girlfriend. And this is his son.'

Having recently lost his mum to cancer, when eight-year-old Tom comes to live with Maggie, he is scared and alone. Tom has been taken into care following concerns from his teachers about his dad Mark's ability to cope as a single parent following the death of his wife. As a former soldier, Mark has resorted to his military training in order to cope with his young son, forcing him to scrub the floors until his hands bleed and perform repeated push-ups as punishment for his misdemeanors.

Finally, Cath has met someone: a man she loves, Robin, and who adores her in return. And after years of managing fine on her own, running a successful business, raising her son and caring for her elderly mother, she feels she deserves some happiness. She expected everyone to be delighted for her. But her friends and family are suspicious of Robin. And Rebecca, a desperate single mother whom Cath has hired as a live-in housekeeper, doesn’t trust him either.

Rainey Paxton was born addicted to heroin. In the fragile first hours of Rainey’s life, hospital doctors and nurses fight to keep her alive. Several months later, she is released into her parents' custody, where she is forced to live on neglect and tainted breast milk. Constrained in her home infested with drug addicts and drifters, Rainey’s drug-addicted parents leave little hope for her protection. While Rainey is still an infant, her aunt Sophie visits her and finds the baby dirty and hungry. A bond forms between the two until tragedy strikes.

The white-washed Italian villa is perfect. I thought it might feel odd, living in a stranger’s house for the summer, but as my husband and children swim in the infinity pool, I start to relax. And then, in the back of a wardrobe, I find something that shatters everything.... Sparkling green eyes, square jaw, lopsided smile. A young man with his arm around a beautiful woman. The picture is old and faded, but I’d recognize him anywhere. The man is my husband.