Five figures gather 'round a shallow grave. They had all taken turns to dig. An adult-sized hole would have taken longer. An innocent life had been taken, but the pact had been made. Their secrets would be buried, bound in blood. Years later a headmistress is found brutally strangled, the first in a spate of gruesome murders that shock the Black Country.

How far would you go to protect your family? Single dad Ben is doing his best to raise his children, with the help of his devoted mother, Judi. And then Ben meets Amber. Everyone thinks this is a perfect match for Ben, but Judi isn't so sure.... There's just something about Amber that doesn't add up. Ben can't see why his mother dislikes his new girlfriend. And Amber doesn't want Judi anywhere near her new family. Amber just wants Ben and the children.

Laura has it all. A successful career, a long marriage to a rich husband, and a 23-year-old son, Daniel, who is kind, handsome and talented. Then Daniel meets Cherry. Cherry is young, beautiful and smart, but she hasn't had the same opportunities as Daniel. And she wants Laura's life. Cherry comes to the family wide-eyed and wants to be welcomed with open arms, but Laura suspects she's not all that she seems.

Mel Taylor was thirteen years old when she found her Mr Right. Twenty years on they remain blissfully in love. She has the man she adores, a gorgeous daughter, a great job and a dream home. But Mel's seemingly perfect life is spoilt by a dark secret and a niggling fear that her good fortune can't last for ever. Despite her husband Adam telling her to live for the present and stop worrying about the future, Mel can't shake the feeling that someone is about to call time on their happiness. And then it happens.

On a wet Monday in January, Jess Mount receives the devastating news that she hasn't got long left to live. She doesn't hear it from a doctor, though. She discovers it when her Facebook timeline skips forward 18 months and family and friends start posting tributes to her - following her death.