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The BBC's latest drama is telling the tale of a murderer from the 1940s - but there's a lot more to it.

Rillington Place is a three-part series which looks into the crimes committed by John Christie - the crimes which saw Welshman Timothy Evans falsely convicted and hanged .

John Christie, a name which is now synonymous with Rillington Place, was responsible for multiple murders and rapes as well as the concealment of bodies, which he'd hidden around his house, 10 Rillington Place, and garden.

His murders had another victim - they led to the shocking miscarriage of justice which saw a young man being hanged.

Who was Timothy Evans?

He was born in Merthyr Tydfil in 1924 and it has been reported that he had problems growing up - such as a tubercular verruca on his right foot which never completely healed.

This infliction caused him to miss a lot of school and by the time he left he wasn't able to read or write too well.

He moved to London with his family and became a painter and decorator, before heading back to Merthyr in 1937 where he sought out work in the coal mines.

The strange case of his changing accent

If you've been watching the BBC programme, you'll have noticed that Evans' accent keeps switching dramatically between Welsh and Cockney.

And before you grab the pitchforks and start slating Nico Mirallegro for poor acting, it is intentional.

According to reports, Evans - who was previously played by John Hurt in the 1971 film called 10 Rillington Place - did fluctuate quite frequently between the two accents.

Obviously being from Merthyr, he sported a Welsh accent growing up, but according to those who knew him, he liked to fit in.

He was a bit of a storyteller and a chameleon, so the London accent he adopted could well have been Evans' way of blending in with the cockney crowds - but his Welsh accent would occasionally slip through.

Returning to London

In London in 1946 he met Beryl Thorley and the pair were married a year later.

Evans met Christie after the newly-wed couple moved into the top floor flat of 10 Rillington Place and became neighbours with Christie and his wife, Ethel.

In 1948, Beryl and Timothy had their first child, Geraldine, but it was reported the couple had a bit of rocky relationship due to money constraints and drinking problems.

Beryl fell pregnant again and the pair considered terminating the pregnancy - given their situation.

This is where the stories started to cross, and if you've been following the BBC programme you'd have seen Christie convince Evans to leave.

Christie convinced him to leave London, where Evans went on to confess to the murder of his wife in Merthyr Tydfil police station in November, 1949.

So what actually happened?

Evans gave a confession to Merthyr police station, stating that he had created a concoction to terminate Beryl's pregnancy which had caused her death.

He told them he had disposed of the body using a drain near 10 Rillington Place - though nothing was found when police searched the area.

Evans later changed his story. He claimed that Christie had offered to carry out the abortion and that Beryl had died during that.

According to Evans' second statement, he came home and Christie explained how the procedure had killed Beryl, and that Geraldine had gone to stay with a couple the Christies knew.

And then Christie told Evans to leave London.

Beryl's body was later found in the wash house behind 10 Rillington Place - along with the body of Geraldine. They had both been strangled - which later was found to be Christie's preferred method of murdering his victims.

Evans was put on trial in 1950 for murder - where Christie denied claims of helping with the termination - and Evans' defence was based on Christie's guilt.

Christie was a key witness, along with his wife, and he denied offering to abort Beryl's unborn baby. He was dismissed as a suspect despite his previous convictions of theft and malicious wounding.

Timothy Evans was hanged in 1950 for the murders, aged 25.

What happened to John Christie?

Three years after Evans was hanged, Christie was apprehended.

After the landlord allowed another tenant use Christie's kitchen, three bodies were found hidden in the pantry which had been papered over.

The pantry was next to the wash house where Beryl and Geraldine were found and once police were alerted, three more bodies were found under the floorboards of Christie's front room - including the body of his wife, Ethel.

John Christie was hanged in 1953. He had eight known victims.

Because of the revelation of Christie's murders, questions of Timothy Evans' guilt were raised and an inquiry to investigate the possibility of a miscarriage of justice began.

(Image: Des Willie/BBC)

He received a royal pardon in 1966 after two official inquiries and in 2003 the home office paid out compensation for the miscarriage of justice to his sister and half sister.

Watch the final episode of Rillington Place on Tuesday, December 13 at 9pm on BBC1