Why was fantasist was allowed to flee UK and kill again?

An Old Bailey judge  has demanded answers after investigators missed key evidence when a fantasist smothered a vulnerable gay man to death while posing as an MI5 agent. Jason Marshall, 28, killed again after he suffocated Peter Fasoli with clingfilm and set fire to the 58-year-old’s bungalow in Northolt, west London, to destroy evidence on 7 January 2013. Marshall flew to Rome, Italy, four days later, where he strangled Vincenzo Iale, 67, to death with an eletrical cord and tried…