Detective Chief Inspector Morse and Sergeant Lewis are working together on another case. This one involves a beautiful young woman, a Swedish student who's been missing for over a year, yet her body has never been found. All that was recovered was a rucksack and camera. Now someone has sent a letter to the local paper, in the form of a poem containing clues, imploring someone to find her body and solve this case. The police resume the investigation, which soon involves Morse and Lewis, leading them on a path that is full of unexpected twists and turns, until they finally uncover the truth and solve the case.