Katarzyna Zowada, a 23-year-old university student, disappeared in Kraków in late 1998. Human remains later recovered from the Vistula were identified as hers. A man long investigated in the case was convicted in 2022, but the Kraków Court of Appeal finally acquitted him in 2024. Her murder remains unresolved.
Katarzyna Zowada was a 23-year-old student of religious studies at the Jagiellonian University in Kraków. She disappeared in November 1998. In January 1999, parts of a human body recovered from the Vistula River were identified through genetic testing as hers.
Prosecutors later described the case as a homicide committed with particular cruelty. Official Polish prosecution material records that remains were recovered from the Vistula on January 7 and January 14, 1999, and DNA testing established that they belonged to the missing student. This archive does not repeat unnecessary graphic detail about the condition of the remains.
The unusual evidence and the absence of a proven offender made the case one of Poland's most persistent cold cases. Investigators repeatedly returned to it as forensic methods and investigative strategies evolved.
Robert Janczewski had been scrutinized in the investigation for years. On October 4, 2017, prosecutors arrested him, and he was charged with Katarzyna's murder. He denied committing the crime.
The prosecution presented a circumstantial case developed over many years. Witness accounts, forensic interpretation and evidence concerning Janczewski's alleged contact with Katarzyna were disputed by the defense. Because those disputes later proved decisive on appeal, this page does not describe prosecution allegations as established facts.
In September 2022, the Regional Court in Kraków found Janczewski guilty and imposed life imprisonment. The proceedings had involved dozens of hearings and a large evidentiary record. The defense appealed.
A conviction at first instance is an important legal event, but it was not the final outcome. The later appellate judgment changed the case fundamentally.
On October 31, 2024, the Court of Appeal in Kraków changed the lower-court judgment and acquitted Robert Janczewski of Katarzyna Zowada's murder. The court's own public statement described the acquittal as final and ordered his immediate release from pretrial detention.
The effect is straightforward but often misstated in true-crime summaries: Janczewski is not the legally established killer of Katarzyna Zowada. The final judgment acquitted him. His earlier conviction cannot be presented as the current legal status of the case.
Janczewski's acquittal did not establish who killed Katarzyna. Later Polish reporting has continued to describe the case as unresolved. There is no final conviction identifying another perpetrator.
Accordingly, the archive classifies this file as Unsolved / Final acquittal of accused. That label preserves both sides of the record: Katarzyna was the victim of a homicide, and the man once convicted of that homicide was ultimately acquitted.
The 23-year-old Jagiellonian University student goes missing in Kraków.
Human remains are recovered from the river and later identified by DNA testing as Katarzyna's.
Prosecutors arrest Janczewski and later charge him with the murder. He denies guilt.
The Regional Court in Kraków convicts Janczewski and imposes life imprisonment.
The Kraków Court of Appeal overturns the conviction, acquits Janczewski and orders his immediate release.
Katarzyna Zowada's murder remains unsolved. Robert Janczewski was finally acquitted on October 31, 2024. No other person has a final conviction for the homicide in the sources reviewed for this file.
An acquittal is not a technical footnote. It means the earlier conviction cannot be used as proof of guilt. This page therefore names Janczewski only in the context of the investigation, trial, conviction and final acquittal.
Last reviewed: August 29, 2026