Nell Sweeney has led an ordinary life. Every day, she walks to and from the hospital where she works as a nurse, believing that no harm can befall her. Until one day she is taken. Because someone out there has a secret. Someone out there has been watching Nell—and they’ve been watching others like her, too. Nell is the unlucky one—she was in the wrong place at the wrong time. And if she isn’t found soon, someone will make sure that she isn’t the last woman to be taken.

Molly Black has disappeared. She's been a bit flighty since her parents died (sure, hadn't she run off with a tree surgeon that time?) but this time, or so says her hastily written leaving note, she's gone for good. That's why the whole Black clan—from Granny perched on the printer all the way through to Killian on Zoom from Sydney—is huddled together in the back room of Uncle John's semi-D in the Dublin suburbs, arguing over what to do.

One year ago today, Tress Walker’s husband was killed in a car accident, on a trip with his secret mistress whilst Tress gave birth to their son. But as time moves on, Tress has to choose whether to protect her fragile heart or open it to love again.

Noah Clark was equally devastated to discover his wife and his best friend were having an affair. Now the love of his life is asking for a second chance. But can there ever be a way back once the trust is broken?

Colm O’Flynn was loved by his close circle of family and friends, however his death came too soon for everyone to make peace with their past. Shauna, his second wife, adored him. But one night she broke their marriage vows and didn’t get time to ask Colm’s forgiveness. Jess was the first Mrs O’Flynn. Her heart is set on someone new, but will the last one-night stand she shared with Colm come back to haunt her? Colm’s best friend, Dan, is recently divorced. Can he take a second shot at happiness if it means betraying the one person who always had his back?

When a woman's body is discovered in a cathedral and hours later a young man is found hanging from a tree outside his home, Detective Lottie Parker is called in to lead the investigation. Both bodies have the same distinctive tattoo clumsily inscribed on their legs. It's clear the pair are connected, but how? The trail leads Lottie to St Angela's, a former children's home, with a dark connection to her own family history. Suddenly the case just got personal.