1974. A family vanishes from their home on an island off the Swedish coast. They have left everything behind – including their one-year-old daughter, Ebba. Now, years later, Ebba has returned with her husband, looking to make a fresh start. But within days, their house is the target of an arson attack. Soon Detective Patrik Hedstrom is on the hunt for a killer who will do anything to keep the past buried...