In leafy suburban Oxford, a builder knocks through a basement wall, and finds a woman and child, barely alive. But the woman is on no missing persons' list, and her captor claims he's never seen her before.
A day later, another body is found - a young woman who went missing when walking with her baby in a local beauty spot. But the case is two years old. It can't possibly be connected to the first...
But DI Adam Fawley knows that nothing is impossible.
And that no one, no matter their appearance, is entirely innocent.