A man has been found guilty of murdering his teen girlfriend’s baby son by shaking him to death when he lost his temper.

Kieran Humphreys, 33, was left to look after six-month-old Archie after just a week of dating Saskia Woodbridge. She left her son in Humphreys’ care at a pal’s home in Houghton Regis, Bedfordshire, so she could go and get her nails done on February 9 last year. Luton Crown Court was told that Humphreys, who had stayed up through the previous night playing Call Of Duty on his Xbox, “gripped and shook” the infant, inflicting a fatal brain injury when he lost his temper.

The defendant took Archie, who had suffered a fatal brain injury and fractured ribs, to a relative's home rather than immediately calling for an ambulance. Bedfordshire Police said Humphreys had 'violen

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