The Family Upstairs

I read it all in one sitting.' Colleen Hoover
'I loved The Family Upstairs!' Sarah Jessica Parker
'Really good, gripping. I couldn't bear for it to finish...' Olivia Colman
'A twisty and engrossing story of betrayal and redemption.' Ian Rankin
'Rich, dark and intricately twisted' Ruth Ware
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In a large house in London's fashionable Chelsea, a baby is awake in her cot. Well-fed and cared for, she is happily waiting for someone to pick her up.

In the kitchen lie three decomposing corpses. Close to them is a hastily scrawled note.

They've been dead for several days.

Who has been looking after the baby?

And where did they go?

Two entangled families.
A house with the darkest of secrets.