A bloodstain expert has detailed the scene at the Warwick shack where Nicholas Dill was allegedly murdered on Boxing Day 2004.

Roi Gilbert, who flew in from Ontario for the Supreme Court trial of the accused man, Andre Hypolite, told the jury about different types of blood patterns he found.

He explained that when analysing these, various information can be gleaned.

"One thing we look at is the movement of people and items at the scene," he said. "Another thing is to see where there's a pause."

The jury heard earlier this week that various bloodstained items were DNA-tested and shown to have blood from Mr. Dill, Hypolite, and Stacey Pike, Mr. Dill's girlfriend.

The prosecution's case against Hypolite is that he took crack cocaine with Mr. Dill, 43, and his girlfriend Ms Pike, now 37, at their home in Pearman's Hill, Warwick, early on Boxing Day morning.

He is alleged to have stabbed Mr. Dill in the back after Mr. Dill changed his mind about participating in a sex act with him.

It is further alleged that Hypolite chopped Ms Pike in the head when she tried to intervene by grabbing a machete. She said during her evidence last week that she subsequently hit him with the machete.

The accused man is said to have escaped through a window after the Police were called. He denies murder and wounding Ms Pike with intent to cause her grievous bodily harm.

Yesterday, Mr. Gilbert said the scene showed "passive stains" in some areas, caused by the free flow of blood onto the floor, and "saturation stains", where it soaked into materials.

"Transfer patterns", where a blood-bearing object comes into contact with an unstained surface, and "pooling" where free-flowing blood has been in the area for a period of time, were also found in the shack, he said, as he talked the jury through a photographic slide show.

He is due to continue his evidence today.