Der Fall [The Case]

As investigative journalists, you are used to doing difficult research. However, when you receive a mysterious call one day, you are faced with a real challenge: 17-year-old Finn Sanna Virtannen has disappeared. No ransom note. No suicide note. Sanna's father is desperate and asks you for help. You set off for Ristiijärvi, a small town in the far north of Finland, unaware that the next few hours will put all your skills to the test. Can you solve the puzzle and save the girl?