How we fit in a Criminal Case

Most experts get called in once charges are already framed; they review what they're handed, write a report, and wait to testify. We prefer to be useful earlier and more often than that, whichever side has engaged us.

We take instructions from prosecution or defense, in any matter involving a collision, a death or injury on the road, or physical and forensic evidence more broadly. The side changes. The standard of work doesn't. Below is where we fit across the life of a criminal case, and what changes depending on which side we're working for.

At the scene, before anyone is charged

Physical evidence from a collision or incident degrades fast, and in a criminal matter the state's own investigators are usually the ones documenting it first. For the prosecution, we can assess early whether the scene evidence actually supports the charge being considered. For the defense, we push to get independent access to the vehicle, scene, or physical evidence before it's released, repaired, or lost, because once it's gone, everyone is arguing from someone else's notes.

The charging decision

Before a charge is formally brought, the physical evidence either supports the mechanism the state believes occurred, or it doesn't. We can give an honest technical read at this stage so a charge isn't built on an assumption that won't survive scrutiny, or so a defense team knows immediately whether they're dealing with a real problem or a chargeable weakness in the state's theory.

Disclosure of evidence

Once a matter proceeds, the state has to disclose its evidence to the defense. For the defense, this is where we identify what's missing: data downloads, calibration and maintenance records, scene measurements, forensic testing that should exist but hasn't been produced. For the prosecution, we help make sure the technical evidence disclosed is complete and correctly characterised, so it doesn't unravel later under a defense expert's scrutiny.

Independent expert instruction

This is the point where either side formally brings in their own expert to reconstruct the incident, test a hypothesis, or challenge the state's version. Whichever side we're on, this is standard expert work, done to the same standard: full reconstruction, physical testing where possible, and a report that states plainly what the evidence does and doesn't support, including where it doesn't help the side that instructed us.

Pre-trial hearings and challenges to the evidence

Before trial, either side may challenge whether certain evidence, or a particular expert's opinion, should be admitted at all. We support this from either side: helping the defense build a technical challenge to a flawed state analysis, or helping the prosecution defend the reliability of its own expert evidence against exactly that kind of challenge.

Plea negotiations

Where a plea is being discussed, the technical strength or weakness of the physical evidence is often the real basis for the conversation, whatever is said officially. We give both sides an honest assessment of how the physical evidence is likely to hold up in front of a court, which is what actually informs whether a plea makes sense.

Preparing for trial

We help build the technical case for trial: exhibits, animations, and demonstratives that make a collision or forensic sequence understandable to a judge or jury, and a clear account of where the physical evidence is strong and where it's genuinely contestable. We also prepare the attorney, on either side, for cross-examining the opposing expert, because a report is only half the work; knowing exactly where to press it under oath is the other half.

Trial and testimony

We testify to our own findings, and we sit with counsel through the trial itself. When the opposing expert is on the stand, whether that's the state's forensic witness or a defense-retained reconstructionist, we're tracking their testimony in real time against their report and the known physical evidence, so anything inconsistent is caught immediately rather than after the fact.

Verdict and sentencing

If a matter proceeds to sentencing, the technical facts, speed, mechanism, degree of control or lack of it, foreseeability, often matter to how the offence is characterised. We can provide that context accurately for whichever side needs it presented clearly to the court.

Appeal

If an appeal turns on a technical or forensic point, having been in the file from the original investigation through to trial testimony means we understand the record in a way a fresh expert brought in later cannot.