Mystery | Jan. 1, 1983
Mystery | Jan. 1, 1983
| Producers | Tallinnfilm |
| Original title | Suletud ring |
| Directors | Peeter Urbla |
| Writers | K. Arne Blom, Peeter Urbla |
as Holmberg
as Thóren
as Petra
as Udin
as Police chief
as Mr. Fromm
as Mrs. Fromm