A coroner's inquest into a shocking murder-suicide in B.C. has released a police video to the public, which shows a terrified wife describing a violent marriage to investigators, weeks before she was murdered.

Her arm in a sling, her face bandaged and bruised, Sunny Park spent hours telling police how she thought her husband had just tried to kill her - and would try again if she divorced him.

"'I'll kill everybody and I'll kill myself', like that . . . it gets worse every time," said Park, recounting her husband's threats.

Five weeks later, her husband Peter Kyun Joon Lee succeeded in taking her life and killed the couple's young son and Park's parents. Lee also killed himself.

A coroner's inquest into the murder-suicide in Oak Bay released the police video of Park's interview Thursday. It is from June 31, 2007, shortly after police believed Lee rammed his Land Rover into a hydro pole with the intent of injuring his wife, who was in the passenger seat.

Park describes a dangerous marriage, saying her husband sexually abused her and tried to control her life, often going into jealous rages. She wanted a divorce and to sell their Victoria restaurant and their home, but Lee would have no part of it.

She described for police how Lee made sure she wasn't wearing a seatbelt and then drove down a straight stretch of road before crashing the vehicle.

"He goes 'I'm sorry, Sunny,' before hitting the pole or tree," she says.

Police originally charged Lee with aggravated assault, but the Crown later reduced the charges. Police had wanted to hold Lee but the Crown said they did have the legal backing to do so.

Lee was then released on strict conditions, including not to contact his wife or her family.

Five weeks after the accident, police arrived at the couple's million-dollar home in the upscale Victoria-area community of Oak Bay, to find five people dead.

The B.C. Coroner's Service has said that Lee stabbed his six-year-old son Christopher, his wife and his wife's parents, before taking his own life with the weapon.

A video was also released of an unco-operative Lee being interviewed. It shows him sitting defensively with his arms crossed, refusing to answer the officer's questions.

Police describe crime scene confusion

On Thursday, the first officer on the scene, acting Sgt. Art Goodwin told the coroner's inquest that what he discovered in the home was the most tragic case of his lengthy career.

"In almost 35 years, I've been to several murder-suicides, but this is by far the worst," said Goodwin, who was near tears at several points.

"The frustration comes in not being able to fix it," he said. "I can't make it any better."

The inquest has been looking into police actions in the case, as officers from the Victoria Police Department, Oak Bay Police Department and Saanich Police all responded to an early morning 911 call from the house.

At least one police officer told the inquest that the departments were at odds about how they should proceed at the scene.

After discovering the bodies of Park's parents, police noticed the smell of gas and left the house.

"I was expecting that house to blow up in front of me. It was just decided we were not going to take emergency personnel into that house and risk having the house blow up," Goodwin said.

"You figure the bad guy's in the house. He's got a lighter."

The police have been criticized for not getting medical attention for the older couple, but another police officer said it was clear that they were dead.

"It was very clear that they were deceased. There were numerous grievous injuries . . . one was stabbed right through the head," acting Sgt. Chris Horsley said.

"This scene was absolutely unsafe. The ability to render first aid simply did not exist."

Police entered the house about four-and-a-half hours after first arriving on the scene, only then finding Lee to be dead.

Police admitted to being frustrated with media criticism of the case, saying that they did their best in a volatile situation.

On Friday, the coroner who examined the five bodies is expected to testify.

With files from The Canadian Press