An RCMP Blood spatter expert is on the stand at the double murder trial of Andrew Berry, the Oak Bay father accused in the deaths of his 4 and 6 year old daughters on Christmas Day 2017.
We warning this story contains graphic and disturbing content.
RCMP Sgt. Kimberley Tremblay, a blood stain pattern and crime scene examination specialist based out of E Division in Surrey, was called into the case on December 27th -- 2 days after Chloe and Aubrey Berry were found stabbed to death in their father's Beach Drive apartment. Berry was found with multiple wounds in his bathtub.
Tremblay testified she agreed to participate in the case after receiving photos of the bedrooms where the girls were found, and photos of the blood-smeared kitchen, as she knew the quantity of blood could be overwhelming for officers, and she could add her expertise to the crime scene.
The sergeant testified she asks for only the most basic information prior to arriving, the number of victims and manner of death, as she wants the evidence to speak for itself. She also said the ability to analyze the scene is not affect by the initial activity of first responders and investigators.
Using a demonstration video Tremblay explained the size, shape, distribution and location of bloodstains are predictable and reproducible, and the patterns tell a story, helping to recreate what happened.
She described finding blood drips, trails, smears, and pools throughout the apartment. She took photos, measurements and DNA samples.
On the livingroom floor she found a blood drip trail containing a minimum of 10 drips, and a minimum of 21 sock foot transfer stains.
In the kitchen she noted transfer, swipes, wipes and finger marks on the floor, near the fridge, stove, countertops, on the cabinets and drawers. On a cabinet door Tremblay observed a minimum of 7 spatters lower to the ground, and transfer stains inside the cupboard.
The floor exhibited marks indicating someone or something heavily contaminated with blood was moving around. She acknowledged it could have been caused by someone slipping and falling.
Near the stove there was a spot, void of blood, consistent with the shape of a knife blade. Nearby a knife sheath was found.
In the bathroom Tremblay described more blood transfer, swipes and wipes in various directions, and blood flow on the toilet. She agreed with the crown that it is possible someone may have sat, taking off bloody jeans.
Earlier Tremblay talked about finding a void spot in bedroom # 1 where she realized the perpetrator must have been standing.
The sergeant continues her testimony Thursday, and is expected to get into more detail about what she found in the bedrooms.