A letter from his godchild Grete conjures up the spirits of the past with Commissioner Borowski. Heike Voigt disappeared four years ago. She was a friend's wife. Her husband Frank Voigt was suspected at the time and acquitted for lack of evidence. In the letter, Grete asks her uncle Klaus for help.
| Creator | N/A |
|---|---|
| Actor | N/A |
| Country | Austria, Germany, Switzerland |
| Production | ARD |