8case filesUpdated Jul 18, 2026
Casepin holds 8 case files in Austria. By legal status, 1 marked unsolved, 6 marked solved and 1 marked overturned.
UNSOLVEDListenMayerling hunting lodge, Vienna Woods · 1889
Crown Prince Rudolf of Austria-Hungary, 30, and his 17-year-old mistress, Baroness Mary Vetsera, were found dead on 30 January 1889 at the imperial hunting lodge in Mayerling, in what Austrian authorities announced as a murder-suicide pact -- an account historians and later forensic examinations never conclusively confirmed.
OVERTURNEDListenInnsbruck, Tyrol, Austria · 1928
In 1928, 22-year-old Philippe Halsman was accused of killing his father, Morduch Halsman, a Latvian Jewish dentist, during a hike in Austria's Zillertal valley. His first conviction, widely criticized as a product of regional antisemitism, was overturned by Austria's Supreme Court; a second trial convicted him of manslaughter, and he was pardoned by the Austrian president in 1930.
SOLVEDListenGeriatriezentrum am Wienerwald, Lainz, Vienna, Austria · 1983
Between 1983 and 1989, four nurse's aides at a geriatric hospital in the Lainz district of Vienna, Austria, killed elderly patients in their care using morphine overdoses and forced drowning; the group confessed to 49 murders, and all four women were convicted in 1991, with the last two released from prison in 2008.
The files run from 1889 to 2015. The 1990s hold the most, with 2 files. The oldest is Mayerling incident, from 1889.
By type, the largest groups are serial murder cases (3), kidnapping and abduction cases (2) and domestic violence cases (2).
3 files of the 8 have coverage attached: 3 videos, podcasts and documentaries from 2 creators. Danelle Hallan and The Casual Criminalist have covered the most of them.
Every file is written from cited sources and pinned where it happened, and every person named carries the legal status the record gives them. If you hold information about an unsolved case, contact the investigating agency named in its file rather than posting it publicly. Families and anyone involved can request a correction from any file.
This page updates from the published files, so counts and statuses change the day a record does. Open any file for its timeline, its sources and the coverage worth your time, or play it as a narrated case file.
Das Haus von Wolfgang Priklopil — Credit: PriwoCC BY-SA 3.0Source
8. By status: 1 unsolved, 6 solved and 1 overturned. The count covers published files only and changes as new files clear review.
Mayerling incident, from 1889. Open the file
Danelle Hallan (1 case) and The Casual Criminalist (1 case).
It rebuilds hourly from the published files; the newest file change here is dated Jul 18, 2026. A status changes only when the record behind it does.
