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Investigations, DNA and The Staircase

Investigations, Media & Impartiality — Reflections from the Panel

Over the weekend we attended a panel hosted by Oliver Laurence of OJT Investigations Group. Panellists included David Rudolf (The Staircase), Chris Nyst, Laura Reece, Dr Sean Barry, and former ABF Commissioner Roman Quaedvlieg.

Key Themes

The discussion covered:

  • How police and lawyers use the media during high-profile cases, and the ethics of doing so.
  • Why DNA evidence isn’t as iron-clad as the public often assumes.
  • Under-representation in Australian courtrooms due to financial barriers.
  • The investigator’s obligation to remain impartial and evidence-led.

The Investigator’s Duty to Stay Impartial

As David Rudolf noted, investigators must avoid tunnel vision. Your role is to gather facts — not to prove guilt or innocence. Turn over every stone, revisit evidence to the standards you’re taught, and re-interview where necessary.

“A good investigator will go into a crime scene and form a working hypothesis fairly quickly. But a good investigator, as opposed to a bad investigator, will keep an open mind for other hypotheses. They won’t close their mind off.”

Spoiler Alert — The Staircase

The prosecution in Michael Peterson’s case was accused of tunnel vision, questionable expert testimony, and celebrating results that fit their theory. The lesson: resist outcome-driven thinking and follow the evidence.

Roman Quaedvlieg on Hypotheses

Whether you’re ex-police, newly qualified, or changing careers, the job isn’t like television. Every hypothesis, interview and surveillance decision must be impartial and contemporaneously recorded.

Bonus: The Owl Theory

For those who’ve watched The Staircase, David Rudolf explains the “Owl Theory” — an alternative account that reframes circumstantial evidence and challenges assumptions.

We acknowledge the Traditional Custodians of the land on which we work and learn. We pay our respects to Elders past, present and emerging and extend that respect to all Aboriginal and Torres Strait Islander peoples

© 2025 Australian Security Academy - RTO 30547