After a whirlwind courtship, Roisin Kelly ignored the sceptics and objectors and married aspiring novelist Brody Brady. Fast forward one year and Roisin’s honeymoon is well and truly over. Brody has become her reclusive, freeloading lodger whilst he pens his masterpiece and she walks on eggshells. Working in the Council Planning office, Roisin dreams to escape the mundanity of her life. Her true passions are cooking and entertaining her family and friends but she lacks the confidence to take it any further.

Tress Walker waved her perfect husband Max off to work, with no idea that she was about to go into labour with their first child. And completely unaware that when she tried to track Max down, he wouldn’t be where he was supposed to be. At the same time, Max’s best friend Noah Clark said goodbye to his wife, Anya, blissfully oblivious that he would soon discover the woman he adored had been lying to him for years. And living alongside the two couples, their recently widowed friend, Nancy Jenkins, is getting ready to meet Eddie, her first true love at a school reunion.

When Georgie, Iris and Nola's mother died and their father disappeared into his grief, the sisters made a pact: they would always be there for one another, no matter what. Now, decades later, they haven't spoken for years and can barely stand to be in the same room. As his health declines, their father comes up with a plan. In his will, he states that before they can claim their inheritance, they must spend six months living together in their childhood home in the village of Ballycove, Ireland, and try to repair their broken relationships.

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.

Esme has run the guest house for as long as anyone in Ballycove can remember. But in her declining years, her sight is failing, and when she has a fall on the eve of the summer season, she is forced to take a back seat for the first time in her life. From her chair in the entry hall, not much passes Esme by. There's Cora, the wife visiting indefinitely... without her husband; Niamh, the city professional with a life-changing decision to make; and Phyllie, the grandmother whose family is slipping away from her.