A lmost three years ago, Chelsey Acorn's family and friends endured day after day of horrific testimony about how the teenager was brutally murdered. This week, the teen's loved ones will return to a Chilliwack courtroom to begin a second trial.

Jesse Blue West is scheduled to appear Tuesday in B.C. Supreme Court to be tried for first-degree murder. His son, Dustin Robert Moir, was convicted of first-degree murder in February, 2010, and was given the mandatory sentence of life in prison with no chance of parole for 25 years.

Father and son initially went to trial together, but after a month the cases were severed.

Moir was convicted by a jury, while West has elected to be tried before a judge alone.

Chelsey was 14 years old when she ran away from a foster home in Abbotsford on June 5, 2005.

She was reported missing the next evening, and police made multiple requests for help from the public to help find her. Until the fall of 2005, people reported seeing her at bus stops and malls in Abbotsford.

But 10 months after she ran away, the teen's body was found by hikers who saw a human bone under a pile of rocks along the Coquihalla River just north of Hope.

Chelsey's body, identified through dental records, had a rock embedded in the skull.

The cause of death was later determined to be blunt-force trauma to the head and face.

Investigators focused on West and Moir - with whom Chelsey had been seen before her disappearance - after examining her

cellphone records and speaking to her friends.

The teen allegedly had a sexual relationship with West, who was a long-haul trucker.

According to evidence presented at Moir's trial, police employed a complex "Mr. Big" operation that first targeted Moir.

Officers posing as criminals made a series of contacts, inviting Moir to participate in criminal acts and inviting him to confess any criminal acts in his background.

Moir eventually told undercover officers about his involvement Chelsey's death, but placed much of the blame on his father.

Police then launched a similar sting against West, and set up a scenario where the two men met, were arrested and placed in a van together.

Evidence from the undercover operation is expected to be presented at West's trial as well.

Chelsey, who would have turned 21 in May, has been remembered as an outgoing, feisty girl with a beautiful smile and a gift for storytelling. Those close to her were devastated by her death.

After Moir's conviction, family friend and former foster parent Cheryl Walden told reporters that Chelsey's family would have no closure until West's trial.

"She's almost got her justice," Walden said at that time.