Hannah adores her older sister, Jenny - they are the best of friends, but different in every other way. Jenny dreams of leaving the States and flying to the UK to visit the places where their English mother grew up.

But Jenny's dream turns to a nightmare when she vanishes without a trace. Hannah and her father arrive in England to a big police investigation. As Hannah gets to know some of Jenny's friends and acquaintances, she realises that families can hide the biggest secrets of all...