There was a "bloodletting event" inside Tim Bosma's truck, a blood spatter expert who examined the truck concluded.
But because the truck's front seats and carpeting had been ripped up, Sgt. Robert Jones, a bloodstain pattern expert with Waterloo Regional Police, testified Monday that too much was missing for him to determine how big that event was — or exactly what caused it.
"I'm suspecting that there was probably information that might have helped me out on those items, and that's why they're missing," Jones said.
But everything he saw was consistent with someone having been shot in the front passenger seat, he agreed with assistant Crown attorney Tony Leitch.
Tim Bosma, a 32-year-old Ancaster dad, disappeared after taking two men for a test drive in that truck on May 6, 2013. The Crown says he was shot in his truck, his body then burned in an incinerator.
Dellen Millard, 30, and Mark Smich, 28, are co-accused of first-degree murder.
On the stand Monday, Jones gave his conclusions about the bloodstains found in and on the truck — blood the jury has heard previously from a DNA expert is extremely likely to have come from Bosma.
Many of the stains both in and outside the truck, Jones testified, appeared to have been cleaned up.
The heaviest staining was found on the dashboard, which he said appeared to have been wiped down with water, with visible staining left behind in the "valleys" of the textured surface.
Bloodstains found on the undercarriage of the truck were also likely the result of a cleanup, Jones said — likely sprayed up there by a power washer or hose.
During cross-examination, Millard's lawyer Ravin Pillay suggested Jones can't say for sure what happened inside that truck, particularly given that so much of the cab had been stripped or cleaned.
He noted that the floor of the truck had been painted.
Jones agreed — he couldn't say how long the cleanup lasted, or how many people were involved. Whether there were multiple clean-ups. Whether cleaning agents were used.
When Smich's lawyer Thomas Dungey was up, he narrowed in not only on Jones's bloodstain analysis, but on his discovery of a .380 calibre bullet casing under the back seat of the pickup during his examination.
Dungey grilled him about why he didn't make a note about such a discovery.
Jones (who said he noticed the casing after leaning his arm on the seat to peer inside the truck looking for bloodstains) argued his job was strictly to analyze blood — for anything else he came across, he alerted the other investigators on scene.
"Which is what happened that day," he said. "I stuck specifically with bloodstains."
When Dungey asked him about hypothetical shooting scenarios and bullet trajectories (specifically, whether it would be possible for the shell casing to end up in the back seat had the driver shot Bosma), Jones stressed again that his job in this investigation was to look for blood.
"The casing tells me nothing when it comes to blood stain analysis," he said.
During re-examination by Leitch, Jones said he does have shooting reconstruction training — it just wasn't what he was qualified to give an expert opinion on that day.
After Jones wrapped up, a forensic chemist from the Centre of Forensic Sciences took the stand to testify about gunshot residue tests he did on a tool box and samples taken from inside Bosma's truck.
Robert Gerard's testimony was cut short when a juror fell ill. He will be back on the stand when the trial resumes Tuesday.