When Mats Sverin, the financial director of a large-scale social project launched by the municipality of Fjällbaki, was found shot in the back of the head, detective Patrick Hedström faced several difficult questions. First of all, what was Mats like? Literally every one of his fellow countrymen spoke purely positively about him, but at the same time they knew nothing about him. Therefore, Sverin had something to hide. Secondly, is the murder related to Mats’ work or are there personal motives involved? The second option is quite possible, because Patrick learned that Mats’s old love had recently returned to these parts. Literally on the day of his death, he sailed on a boat to visit her, to an old house on an island with an abandoned lighthouse. And then Erika, Hedström’s wife, remembered that this island is considered by the people to be an eerie place, a haven of ghosts...