The Somerfords are the kind of family other people envy: the successful husband and his beautiful wife have a gorgeous house, lots of money and even a new baby to complete their family. Then, Ian Somerford's secretary is found lying dead at the foot of an apartment block and rumours of a lethal affair start to fly. Angelica, Ian's American wife, throws him out of the house as he faces police questioning. Several days later, her body is found, along with those of her children. Only baby Thomas survives, sleeping in his cot. Ian's body is found later, a bottle of sleeping tablets in his hand. Ian's sister, Diane, is the only one who can't believe he committed a terrible crime. But at every turn, more unsettling family secrets emerge. Can Diane clear her brother's name only by becoming a victim herself?