THE 18-year-old daughter of the Marquess of Queensberry died after injecting heroin at a party inside a flat in Notting Hill, west London, an inquest has heard.
The aristocrat's boyfriend has claimed Lady Beth Douglas was a prostitute and dominatrix before she died following the drug and alcohol binge.
What happened to Lady Beth Douglas?
Lady Beth Douglas was partying inside a £2.5m flat in Notting Hill in March during an alleged marathon drug and alcohol bender.
Her boyfriend, Jenan Karagoli, 21, told a coroner he had discovered needle marks on her arm after failing to wake her.
The teen aristocrat also had cocaine and morphine in her blood.
Karagoli claims that Beth had been making money by working as a prostitute, appearing in dominatrix webcame shows and selling her underwear on the internet for £30 at a time.
Karagoli told the Daily Mail that the couple had argued about her alleged sexual behaviour the day before she died on March 7.
He said: "I knew about all this adult work, escorting, so on and so forth – but I kept my mouth shut."
He claims she would tell him to wait in a pub and then disappear for hours, saying: "She told me to sit and enjoy my Guinness while she went and met a friend.
"Soon she would phone and say she had got us a hotel room for the night."
Karagoli told the inquest the pair had spent at least two days drinking and taking drugs while staying in hotels.
Lord Queensberry criticised police for failing to identify the heroin dealer and those who were at the party.
The inquest recorded Beth’s cause of death as a cardiac respiratory failure and cocaine and heroin poisoning.
Who are Lady Beth Douglas's parents?
Lady Beth was the youngest child of David Douglas, 88, the 12th Marquess of Queensberry.
Douglas was born in 1929 and educated at Eton College.
He has been married three times and fathered eight children, Lady Beth Douglas being the youngest.
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