Stephen Aston is getting married again. The only problem is, he's still married to his first wife, even though she is in a care facility for dementia. But he'll take care of that easily, by divorcing her—even if his adult daughters protest. Tully and Rachel Aston look upon Heather as nothing but an interloper. Heather is the same age as Rachel and even younger than Tully. Clearly she's a gold digger and after their father's money. Heather has secrets that she's keeping close, and reasons of her own for wanting to marry Stephen.

Fern Castle works in her local library. She has dinner with her twin sister, Rose, three nights a week. And she avoids crowds, bright lights, and loud noises as much as possible. Fern has a carefully structured life, and disrupting her routine can be...dangerous. When Rose discovers that she cannot get pregnant, Fern sees her chance to pay her sister back for everything Rose has done for her. Fern can have a baby for Rose. She just needs to find a father. Simple.

There’s a cottage on a cliff. Gabe and Pippa’s dream home in a sleepy coastal town. But their perfect house hides something sinister. The tall cliffs have become a popular spot for people to end their lives. Night after night Gabe comes to their rescue, literally talking them off the ledge. Until he doesn’t. When Pippa discovers Gabe knew the victim, the questions spiral...Did the victim jump? Was she pushed?

From the moment Lucy met her husband's mother, Diana, she was kept at arm's length. Diana was exquisitely polite and properly friendly, but Lucy knew she was not what Diana envisioned. That was five years ago. Now, Diana is dead, a suicide note found near her body. Diana claims she no longer wanted to live because of a battle with cancer. But the autopsy finds no cancer. The autopsy does find traces of poison and evidence of suffocation.

All their lives, Alice Stanhope and her daughter, Zoe, have been a family of two, living quietly in Northern California. Zoe has always struggled with crippling social anxiety, and her mother has been her constant and fierce protector. With no family to speak of and the identity of Zoe's father shrouded in mystery, their team of two works - until it doesn't. Until Alice gets sick and needs to fight for her life. Desperate to find stability for Zoe, Alice reaches out to two women who are practically strangers but who are her only hope: Kate, a nurse, and Sonja, a social worker.