A man is found shot and dying at a church ruin. It appears to be gang crime, but there is no motive and the weapon is gone. Maria and her team are looking for evidence that the murder is connected to a known criminal on the island. 

The midsummer celebration at the campsite is abruptly interrupted when one of the summer guests is found murdered. Suspicion immediately falls on the aberrant mysterious young man. At the same time, Sebastian is called for questioning by the police's internal investigations.