When Rachel's parents get jobs on an offshore island, her main worry is when the wind turbine will be installed so that she can play her CDs. But then she notices some weird things happening. Her brother, Stevie, always untidy, insists that everything in his room should be in straight lines, facing the same way. Why do the island rabbits dig their burrows in parallel lines, facing north? Why don't the islanders get lost in the fog? And why did the last warden's house burn down? As she tries to find the answers to these mysteries, Rachel has to act quickly to prevent another tragedy.