A group of people arrive on an isolated island, unaware of its dark history. Could a murder be the most recent of a sinister chain of events stretching back to the 19th century?

Gittan warns Minnie not to look too deeply into the island's past, while Johan tries to get his phone and computer back from Uno.

The circumstances in which the woman who vanished from the island appear all the more mysterious. Minnie is determined to gain access to Room 5 to find answers.

Minnie and Johan find evidence of Uno withholding dark secrets from the past. Tempers fray when the group sets out on a hiking expedition.

Minnie becomes increasingly certain that something, or someone, is preventing the group from discovering what happened on Kallskar.

The island's dark past increasingly seems to be linked to present events. Could it be the reason for Amina's murder?

Oscar has vanished, but Uno does not want to inform the police right away. Minnie returns to the cholera hospital, where someone, or something, seems to be waiting for her.

Someone has cut the telephone lines to the mainland. And Gittan’s boat, the only way to get off the island, has disappeared.