The defence team for Francesco Mangione will mount an insanity plea in the state murder trial. Sources close to the case confirm the strategy. It is a high-risk gamble. Insanity defences rarely succeed. They require proving the defendant did not know right from wrong at the time of the killing.
Mangione stands accused of the brutal stabbing of 34-year-old Emily Carter. The crime took place in her Bayswater flat last November. The prosecution alleges premeditation. They point to Mangione’s purchase of a hunting knife two days before the murder. They note his social media posts referencing violent fantasies.
The decision to go down the insanity route signals desperation. Or calculation. Mangione’s legal team includes high-profile criminal QC Marcus Webb. He successfully used the insanity plea once before in 2015. That case involved a paranoid schizophrenic who killed his neighbour. Webb argued his client believed the victim was a demon. The jury bought it.
But this is different. Mangione has no documented history of severe mental illness. His medical records show treatment for anxiety. Nothing more. The prosecution will dig into that gap. They will portray the plea as a last throw of the dice.
Insanity pleas in the UK are governed by the M’Naghten Rules. The burden of proof is on the defence. They must show that Mangione was labouring under a defect of reason. That he did not know the nature and quality of his act. Or that he did not know it was wrong.
This is a high bar. The Crown Prosecution Service will resist vigorously. They have a strong case. Forensic evidence places Mangione at the scene. CCTV shows him leaving the flat shortly after the estimated time of death. His fingerprints are on the knife handle.
Why then the insanity plea? Insiders whisper that Mangione’s family has deep pockets. They have funded a team of psychiatrists who believe he suffers from a dissociative disorder. They will argue he was in a fugue state during the attack. That he had no control over his actions.
But the jury will hear from the prosecution’s experts too. They will likely testify that Mangione’s behaviour after the murder was rational. He cleaned the knife. He changed his clothes. He went to a pub and had a pint. Not the actions of a man out of touch with reality.
Politically, this case is toxic. It feeds into public anxiety about violent crime. The government is under pressure to be tough on law and order. A successful insanity plea would spark outrage. It would fuel calls for reform of the defence. Tory backbenchers are already sharpening their knives.
The trial is set for June. Jury selection will be critical. The defence wants a jury sympathetic to mental health issues. The prosecution wants pragmatists. This will be a battle of narratives. A story of madness versus a story of cold calculation.
Inside the courtroom, all eyes will be on Mangione. How does he present? Does he show remorse? Or blank detachment? The jury will make a moral judgment as much as a legal one. They will ask themselves: is this man evil or ill?
The Mangione defence knows the odds. But they have no choice. The evidence is stacked against them. An insanity plea is their only shot at a reduced sentence. They will argue that Mangione deserves treatment, not punishment. The prosecution will argue he deserves neither. Justice, they will say, demands a conviction for murder.
This is a story still unfolding. The pleas will be formally entered next week. Then the real game begins. I will have more details from the Old Bailey later today.








