Emma Barnett, from in Essex, was found guilty of murdering her 14-month-old son Oakley
A woman has been convicted of murder after administering a lethal combination of prescription drugs to her infant son, having been discovered clutching him in a loft. Emma Barnett and her son Oakley were initially reported missing following a family court hearing on 8 November 2024, at which it had been ruled that her 14-month-old son was to be taken into care.
Officers had believed that Barnett, of Chester Road, Debden in Essex, had taken Oakley to the nearby Epping Forest. Judge Mr Justice Derek Sweeting, told jurors at Cambridge Crown Court, that the 36-year-old had parked her vehicle at Epping Forest before walking back to her home.
Police forced entry into the property on 8 November 2024, where they found Barnett concealed in the loft with her son. She initially refused to come down and engage with police.
As negotiations continued, officers grew increasingly alarmed for the child’s welfare. They forced their way into the loft space, and both Barnett and Oakley were subsequently taken to hospital for treatment.
Tragically, despite the efforts of medical staff, Oakley died in December 2024. Barnett received hospital treatment before being arrested on suspicion of murder in January 2025.
The judge noted that Barnett had later stated in interview that she “wanted the police to think I was in the forest so I could stay indoors with Oakley”.
The Crown Prosecution Service (CPS) confirmed that evidence presented during the trial revealed Barnett had prepared a bottle containing a mixture of milk and medication, which she administered to Oakley, ultimately causing his death. The CPS confirmed Barnett was convicted of murder following her trial.
Officers had communicated with Barnett by telephone and through the loft hatch. Initially, she informed them that Oakley was asleep, before declaring “I have killed him”, according to the CPS.
Police say they carried out a “detailed investigation” which included interviewing Barnett in June 2025. She declined to respond to any questions, police say, but was subsequently charged with one count of murder.
During an 18-day trial at Cambridge Crown Court, jurors heard that Barnett had been scheduled to attend a legal hearing to determine Oakley’s future. The toddler had been placed under an interim care order on the day they disappeared.
Barnett initially pleaded not guilty to murdering the child. However, after six hours of deliberation, the jury returned a guilty verdict.
Summarising the evidence for jurors earlier this week, the judge stated that Oakley was admitted to hospital and died on New Year’s Eve 2024. He explained the prosecution’s position was that Barnett “intentionally administered to him (Oakley) medication prescribed to her intending to kill him and this was the planned outcome”.
Judge Sweeting noted that the defence case was that Oakley’s death was accidental. Outlining the defendant’s position to jurors, the judge continued that her case was that “she didn’t intentionally administer medication or intend serious harm or to kill him”. “Her intention was to take her own life but only at the point Oakley would be removed from her by police,” the judge said, summing up Barnett’s defence case.
Barnett claimed that concealing herself in the loft “was to extend the time she had left with Oakley”, the judge stated. He explained that investigators discovered two baby bottles in the loft containing liquids that tested positive for the antihistamine promethazine, which can induce sedation, and the antidepressant mirtazapine. The judge noted that expert testimony indicated “taken together their effects may be greater than either alone” and they could cause “respiratory compromise”.
Nicola Pope, senior Crown prosecutor, said: “Emma Barnett deliberately gave her baby son a dangerous mixture containing medication which proved fatal. Our prosecution case relied on a detailed and careful analysis of the evidence from the police investigation, including expert medical evidence, to establish how Oakley came to die.
“I hope that today’s outcome provides some measure of peace to Oakley’s family and loved ones during this deeply upsetting time.”
Detective Inspector James Holmes of Essex Police said: “This was an extremely upsetting and difficult investigation for everybody involved. Our thoughts remain with Oakley and everyone who loved him.”
Barnett is due to be sentenced at Cambridge Crown Court on 5 June.





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