Honeytrap thieves jailed for killing men they had drugged

News imageThames Valley Police Two mugshots - a man and a woman - issued by Thames Valley PoliceThames Valley Police
Adina Mihai and Madalin Dumitru were both jailed for 17 years

A couple who drugged men seeking sexual services in order to steal from them have been jailed for killing two men and poisoning others.

Adina Mihai and Madalin Dumitru admitted the manslaughter of Gary Mouat, 37, from Oxfordshire, and Malcolm King, 80, from Gloucestershire, in 2025 and 2024 respectively.

The pair also each admitted two further counts of administering poison to surviving victims on the first day of their trial in June.

Mihai and Dumitru were both sentenced to 17 years in prison at Oxford Crown Court.

Mihai, who posed as a sex worker, and her partner Dumitru, arranged to meet men paying for services she had advertised online at their homes.

The court heard four had their alcoholic drinks spiked with the powerful sedative gamma-butyrolactone (GBL) so the pair could steal from them.

Two men died as a result, while two others - who cannot be named due to reporting restrictions - survived.

News imageThames Valley Police A composite image of two men, both smiling into the cameraThames Valley Police
The couple killed Malcolm King, 80, from Gloucestershire, and Gary Mouat, 36 from Banbury

Julian Evans KC, prosecuting, said Dumitru would drop Mihai at the victim's home and wait nearby, apparently armed with weapons in case of trouble.

After encouraging the victim to drink the alcohol laced with GBL, Mihai would wait until they fell unconscious, before looking for property to steal, such as cash, aftershave, jewellery and expensive watches, Evans said.

He said the defendants, who previously lived in Birmingham before moving to Ilford, were "willing to act in this way out of greed".

Sentencing, Mrs Justice Brunner KC said the amount of GBL given to the pair's victims was "haphazard",

She told them: "If you had stopped for a moment to consider the risks, as you should have done, you would have realised that you were creating a high risk of serious injury or death every time you administered that drug.

"If you had done the most cursory research you would know that GBL can be extremely toxic."

News imageThames Valley Police A woman and a man in a selfie-style video in the car. The man is driving and the woman is smiling into the camera. They are both wearing sunglasses.Thames Valley Police
Adina Mihai filmed a TikTok video while Madalin Dumitru drove the pair to Gary Mouat's home on 12 July 2025

The death of Malcolm King in August 2024 was initially treated as non-suspicious, but after Gary Mouat died nearly a year later, detectives revisited the first case and arrested the couple.

Thames Valley Police said officers discovered Mihai had left her fingerprint and DNA at both scenes, and realised both had been poisoned.

A video statement made by Gary Mouat's nine-year-old son was played during the sentencing hearing.

He said: "My daddy was funny, silly, loving and a trickster, we always used to prank each other.

"Why did you have to kill my daddy, you could have just taken the money, he was really kind, he would have given it to you.

"He was my daddy and now he's gone."

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