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Rapport från Bergwallkommissionen

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Rapport från Bergwallkommissionen (SOU 2015:52) is the state inquiry, chaired by Daniel Tarschys, into how the judicial and healthcare systems acted in the proceedings that convicted Sture Bergwall, then known as Thomas Quick, of eight murders between 1994 and 2001. All eight convictions were set aside after retracted confessions, with the final acquittal in 2013. The local PDF is the official report, including an English summary.

Findings

The commission found that a mentally ill patient at Säter Hospital drove the process by confessing to old unsolved murders, and that every institutional safeguard around him adjusted itself to the confessions instead of testing them:

  • Investigators uncritically adopted Bergwall’s own explanatory model, in which incorrect or vague answers were “deliberate deviations” caused by the difficulty of recounting traumatic memories. The model’s legitimacy came in part from his psychotherapists and from the psychologist advising the police and prosecutor.
  • Interviewing departed from ordinary methods. Investigative findings were conveyed to Bergwall, so his account converged on facts his confessions should have been checked against.
  • The same core group, including the interrogator, the prosecutor, the treating psychotherapist, and the advising psychologist, kept their roles across the investigations. The commission describes groupthink and a pursuit of consensus within this group.
  • The trials lacked opposition. With one late exception, both the prosecution and the defence argued for conviction, so no one questioned the confessions or how the investigations were presented. District courts waived built-in controls, accepted a weaker basis for judgment, and did not set sufficiently high standards for the evidence required to convict for murder.
  • Court experts required by law to be unbiased had been engaged by the prosecutor during the investigations, creating conflicts of interest, most clearly for the advising psychologist and a repeatedly used forensic doctor.
  • Throughout the confession period, Bergwall was treated with benzodiazepines and became severely dependent. His therapy aimed partly at recovering repressed memories of childhood abuse and of the murders that the abuse was assumed to be re-enacted in, under theories that were controversial at the time, with insufficient regard for false-memory risk. Information from therapy was used in the murder investigations.

Recommendations

The commission endorsed statutory codification of the objectivity principle for police and prosecutors, better training and oversight of investigative methods, a strengthened adversarial element in criminal trials, quality assurance for expert evidence, and stronger scientific grounding for forensic psychiatry.

Use with care

The report examines one extraordinary case cluster and was written after the acquittals, with the clarity of hindsight. Its value in Rättssäkerhet in Swedish criminal cases is mechanistic rather than statistical: it documents that the failure chain identified in Felaktigt dömda can operate at full scale, through cooperating institutions, for years, in Sweden’s most scrutinized murder cases.

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