All Sarah McIntyre has ever wanted was a loving, happy family. So when her husband JP announces on Christmas Day that he is leaving her and their two children, nine-year-old Harry and four-year-old Robyn, Sarah is left reeling. But things are set to get worse when Robyn is diagnosed with an aggressive brain tumour. Can JP and Sarah unite to fight their biggest battle yet? Or will they be on opposing sides once again? With the couple at loggerheads and with Robyn's condition deteriorating day-by-day, precious time is running out and JP is getting desperate....

In one split second, Aidan Whelan’s perfect world is changed forever when his wife, Rowan, and three-year-old daughter Milly are involved in tragic accident. Helena O’Herlihy and her husband, James, have been struggling in their marriage, but a knock on the door telling her that James has been involved in a car crash has Helena rushing to his side. When Aidan and Helena bump into each other at Dublin City Hospital, they soon begin to wonder if it’s more than just coincidence that brought them there.

Sisters Laura and Penny were once close, bonded together after the early death of their mother. Laura always had her younger sister’s back until one day everything changed and Penny disappeared. Twenty years later Laura finds herself alone and at a crossroad in her life; questioning her marriage and her future. Meanwhile Penny has spent her whole life running away from her problems until one day she is forced to stop and face the shocking truth. When Penny turns up on Laura’s doorstep late one stormy night, Laura is immediately suspicious of her sister’s motives.

It’s a beautiful day for a wedding. White roses scent the air and the summer sunlight streams in. A spoon chimes against a champagne flute and the room falls silent. And there he is - my husband - getting to his feet to propose a toast. He’s still handsome. His new wife is next to him, gazing upwards, oblivious. I’m not supposed to be here. All these years in the same town and I had no idea until I saw his name on the seating plan. He lived with me, once. Loved me. Small-town memories are long, but the people in this room don’t want to remember.

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.

When I found out I was pregnant, I couldn’t have been happier. Ever since my own father died, I’d felt utterly lost. But you changed everything. Finally, I had found my purpose: to be the best mother I could be. But I couldn’t–wouldn’t–tell anyone who your father was. I could never forget the look in his eyes that day. The betrayal written across his face. All the things we didn’t say and the secret that tore us apart.

Ava’s daughter, Carly, is everything a 10-year-old should be: energetic, creative, and the light of her parent’s lives. But when she starts stumbling down stairs and walking into doors, Ava wants to rush to the doctor. Her husband, Rick, is sure she’s fretting over nothing - kids can be a little clumsy sometimes. But Ava’s instinct is telling her something is seriously wrong. Ava takes Carly to see a specialist and is given a devastating diagnosis: a rare genetic condition that will change her future forever.

There are two little girls in the photo. I instantly recognize myself as the small, dark-haired child in the purple dress. But who is the girl with the long, blonde hair laughing at the camera? And why is the photograph here, in a stranger’s house? When I find the tattered picture hidden away at the back of a dusty cupboard in Amy’s house, my mouth goes dry with shock. Though I haven’t known Amy for very long, I love looking after her young children, in her picture-perfect hilltop house with its sprawling wildflower garden and bright, airy kitchen.

When Madeline's six-year-old daughter Tilly collapses one Sunday night, Madeline’s world is turned upside down. Racing to the hospital, she imagines the worst scenarios in her mind, but when they arrive the doctors say that Tilly is fine. Madeline’s ex-husband Adam and her best friend Laura think Madeline is being overprotective, that Tilly fainted because of her fussy eating. But Madeline is sure something is seriously wrong with Tilly. She can feel it. And she believes that a mother’s instinct is never wrong.

I didn’t plan to fall pregnant, but when I found out, I was overjoyed. Even though I’d be going it alone, I swore I’d give my baby everything they needed. But I didn’t know who the man I met on that sweltering summer night, the father of my child, really was. I decided to keep his secret to protect the innocent…but then my beautiful baby was born with a rare illness, desperately needing a transplant.

It’s a miracle when Katherine’s baby boy is born healthy. But his twin sister doesn’t survive, and when Katherine is told she can’t have any more children, the loss is almost too much for her to bear. Katherine always saw herself having a big family: She remembers how the loneliness of being an only child used to overwhelm her, and she is desperate to adopt a sibling for her son. But her husband, Davis, won’t agree. He worries that Katherine will struggle when the new baby arrives.

When the call finally comes, my life as I know it is over—my job as a teacher, my marriage, my family are all gone. In a heartbeat, I’ve lost everything that ever mattered to me. All because of one secret and what someone thinks she saw....

Nobody talks about my mother. Absolutely nobody. I have no idea what she was like. I’d always thought they kept quiet about her because they were sad. But what if it was because they were guilty?

When Libby Nicholls arrives in London, brokenhearted and with her life in tatters, the first person she meets on the bus is elderly Frank. He tells her about the time in 1962 that he met a girl on the number 88 bus with beautiful red hair just like hers. They made plans for a date at the National Gallery art museum, but Frank lost the bus ticket with her number on it. For the past 60 years, he’s ridden the same bus trying to find her, but with no luck.

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.