Johan Theorin (born in 1963 Gothenburg) is a Swedish journalist and author. Throughout his life, Johan Theorin has been a regular visitor to the island of Öland in the Baltic Sea. His mother’s family—sailors, fishermen and stone cutters—have lived there for centuries, nurturing the island’s legacy of supernatural tales and folklore. Echoes from the Dead (originally published in Sweden as Skumtimmen by Wahlström & Widstrand) is Theorin’s first novel.
https://en.wikipedia.org/wiki/Johan_Theorin