For 20 years, Fred West tortured and murdered innocent victims before his horrifying crimes were finally exposed and he was arrested.

The serial killer and his twisted wife, Rose West, slaughtered many of their victims in their family home at Cromwell Street, Gloucester, which was dubbed the 'house of horrors'.

When police finally caught monster Fred, officers were horrified to find many of his and Rose's victims were buried in the couple's back garden and even in the walls of their home.

Rose was finally convicted of 10 murders and told she would spend the rest of her life in jail.

Fred never faced justice after being found dead in his prison cell just weeks before he was due to stand trial for his gruesome crimes.

Fred West tortured and killed at least 12 people
Fred West tortured and killed at least 12 people

But it was those closest to the twisted dad that bar the worst scars of his years of sadistic violence - his own children.

Their eldest daugher, Heather, was the reason the murderous pair were finally snared - but she paid for this with her life.

Rose also killed Fred's eight-year-old step-daughter, Charmaine.

It was while the police were looking for Heather, who had been reported missing by friends, at the house in Cromwell Street that officers found a thigh bone.

For years, Fred and Rose had claimed their missing daughter was a drug dealer and now living in Dubai, a story the police clearly never fully believed.

The killer couple's home was dubbed the 'house of horror'
The killer couple's home was dubbed the 'house of horror'

In one final attempt to discover what had happened to Heather, who was just 16 when she vanished, officers got a search warrant to search the West's home at 25 Cromwell Street, Gloucester.

On Febrary 24, 1994, eight years after Heather was last seen, police started digging at the home.

Initially, Rose was furious officers were searching her home, especially as Fred was at work.

But before search teams arrived the following day, Fred had made a remarkable confession - he marched into a police station and told officers he was responsible for killing Heather.

Experts now believe he was doing this in a desperate bid to stop the police from continuing their search and implicating wife, Rose, in his sick world of rape, torture and murder.

Heather West was murdered by her parents at the age of 16
Heather West was murdered by her parents at the age of 16

But bodies started to stack up at the house of horrors and both Fred and Rose were soon charged with multiple murders.

Fred even agreed to help police with their search.

Chilling photographs show where he had sprayed an X on walls or the word BODY to reveal where each of the dismembered corpse had been buried.

Fred and Rose West's crimes had gone undetected for more than two decades.

The wall of secrecy they had built around their sick torture and murders was upheld by their own children, who themselves were physically and sexually abused by their parents.

Fred and Rose West
Fred and Rose West

And sick Fred, who sexually abused at least two of his daughters, had a way of making sure his children kept his and Rose's sick secret.

He would threaten to "bury them under the patio" - and, knowing what their parents had done, the youngsters remained too afraid to report them.

Fred's solicitor Howard Ogden said: "The children were kept under locak and key in a cellar environment and Rose controlled that."

The serial killer also felt a sick ownership over his daughters.

Jayne Hamer had been a lodger at 25 Cromwell Road when she was just 17 in 1977.

Jayne Hamer was a lodger at the couple's home
Jayne Hamer was a lodger at the couple's home

She said: "Fred felt he should take his daughters before any other man had her. I heard one of the children down in the cellar, shouting 'stop it daddy'.

"I hoped it wasn't what I thought it was. I was devastated but I was 17 and had just left home and I knew no one would believe me, so I thought the best option was to move out."

Fred West was found dead in his prison cell on January 1, 1995, just weeks before his and Rose's murder trial was due to start.

Rather than being devastated her husband was dead, Rose saw this as her 'get out of jail' card.

Her solicitor, Leo Goatley, said: "I told Rose Fred was dead and her emotions were confused. There was a certain glow and relief in her expression.

"If she was distressed she certainly didn't betray that to me."

Despite no forensic evidence against Rose, and with Fred no longer alive, she still faced a murder trial, after being charged with 10 deaths.

She was convicted of all 10 charges and told she would spend the rest of her life behind bars.

Rather than being devastated her husband was dead, Rose saw this as her 'get out of jail' card.

Her solicitor, Leo Goatley, said: "I told Rose Fred was dead and her emotions were confused. There was a certain glow and relief in her expression.

"If she was distressed she certainly didn't betray that to me."

Despite no forensic evidence against Rose, and with Fred no longer alive, she still faced a murder trial, charged with 10 deaths.

She was convicted of all 10 charges and told she would spend the rest of her life behind bars.