Warning: This article contains content some readers may find distressing.

An Ottawa courtroom heard more horrific testimony at the trial of a suspended Mountie and his wife, who are accused of brutally abusing their son over a three year period, keeping him chained up and denying him food and water.

The boy – who cannot be identified -- weighed just 50 pounds and was so badly dehydrated that he was no longer producing urine when he finally escaped for good in February, 2013.

At the time, a neighbour found the 11-year-old in a snowbank and called police.

The boy’s father, who is currently under suspension from the RCMP, and stepmother are facing charges of forcible confinement, assault and failing to provide the necessaries of life. The father is also charged with aggravated sexual assault and firearms charges.

The boy, now 13, testified Friday, appearing by video so that he could remain in a separate room from the courtroom where his father and stepmother stood accused.

The boy said he had tried to escape several times and police “didn’t do anything” one time when he managed to get away.

“They sided with my dad,” he told the court. “(The police) didn't even investigate when they took me home."

The boy testified that his father regularly beat and choked him, keeping him naked in the basement and secured with chains.

He said he was forced to confess to his supposed sins, including looking at girls with lust. The child said he didn't know what lust meant until his dad explained it. He also said his father told him he was demonic.

At one point, according to the boy, he was forced to go a week and a half without water. He said his father told him that, “if he was thirsty,” he should “drink his own pee.”

“He would usually make me drink it,” he added.

When he was once caught using mouthwash to clean his teeth, his father forced him to drink the entire bottle of mouthwash.

Another time, the boy alleged, his father forced him to lie in a bath filled with ice cubes and cold water and then stepped on his head.

In another incident, the boy said his father held a gun to his head and ordered him to repeat to him the things the child’s birth mother had said about him. The boy had lived with his mother until she died in 2009.

He said his stepmother also beat him with a wooden spoon, but never hit him as hard or as often as his father did. The boy said she warned him to obey his father so that he wouldn’t get hurt as badly.

After the parents were arrested, the couple’s other two children were placed in the care of Children’s Aid. The parents are currently out on bail.

Throughout the child’s testimony, the boy’s father refused to look at the screen, choosing instead to stare at the ground while his stepmother sat with her head down.

At several points in his testimony on Friday, the boy broke down crying, forcing the judge to suspend testimony. The case is being heard by judge alone and will resume next week.

With a report from CTV's Katie Simpson