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.

This was meant to be the perfect trip. The northern lights. A press launch on a luxury cruise ship. A chance for travel journalist Lo Blackwood to recover from a traumatic break-in that has left her on the verge of collapse and to work out what she wants from her relationship. Except things don't go as planned. Woken in the night by screams, Lo rushes to her window to see a body thrown overboard from the next-door cabin. But the records show that no one ever checked in to that cabin, and no passengers are missing from the boat.

Everyone has an idea of what their perfect life is. For Agatha, it's Meghan Shaughnessy's. These two women from vastly different backgrounds have one thing in common - a dangerous secret that could destroy everything they hold dear. Both will risk everything to hide the truth, but their worlds are about to collide in a shocking act that cannot be undone.

Jane stumbles on the rental opportunity of a lifetime: the chance to live in a beautiful ultraminimalist house designed by an enigmatic architect, on condition she abides by a long list of exacting rules. After moving in she discovers that a previous tenant, Emma, met a mysterious death there - and starts to wonder if her own story will be a rerun of the girl before. As twist after twist catches the listener off guard, Emma's past and Jane's present become inexorably entwined in this tense portrayal of psychological obsession.

How can a child vanish without a trace? Last night, eight-year-old Daisy Mason disappeared from a summer party at her home. No-one at the party noticed her leave. Even her parents aren't sure of the last time they saw her. DI Adam Fawley is trying to keep an open mind. But he knows that in nine cases out of 10, it's someone close to the victim. When a pair of bloody tights is discovered, Fawley's worst suspicions are concerned. Someone knows where Daisy is. And her time is running out.

When lawyer Lily marries Ed, she's determined to make a fresh start. To leave the secrets of the past behind. But when she takes on her first criminal case, she starts to find herself strangely drawn to her client. A man who's accused of murder. A man she will soon be willing to risk everything for. But is he really innocent? And who is she to judge?

When a young boy discovers the body of a woman beneath a thick sheet of ice in a South London park, Detective Erika Foster is called in to lead the murder investigation. The victim, a beautiful young socialite, appeared to have the perfect life. Yet when Erika begins to dig deeper, she starts to connect the dots between the murder and the killings of three prostitutes, all found strangled, hands bound, and dumped in water around London.

The text message is just three words: I need you. Isa Leigh drops everything, packs up her baby daughter and heads straight to Salten, where she and her three best friends attended prestigious boarding school Salten House. Only Kate still lives in the area, at the crumbling Tide Mill she inherited when her disgraced art tutor father vanished when she was just 17. Each of the women is running from something, from an act that has haunted them for many years but which they have tried their best to bury.

Just before dawn in the hills near the Scottish border, a man murders a young woman. At the same time, a hot-air balloon crashes out of the sky. There's just one survivor. She's seen the killer's face - but he's also seen hers. And he won't rest until he's eliminated the only witness to his crime. Alone, scared, trusting no one, she's running to where she feels safe - but it could be the most dangerous place of all....

It's 2011, and Samuel Andresen-Anderson - college professor, stalled writer - has a Nix of his own: his mother, Faye. He hasn't seen her in decades, not since she abandoned the family when he was a boy. Now she's reappeared, having committed an absurd crime that electrifies the nightly news, beguiles the Internet, and inflames a politically divided country. The media paints Faye as a radical hippie with a sordid past, but as far as Samuel knows, his mother was an ordinary girl who married her high school sweetheart.