Avsnitt 6

A father/son trip to the capital ended in horror as 51-year-old Lee Pomeroy fell victim to a ferocious knife attack on a commuter train. Lee was brutally stabbed 18 times in 25 seconds and died in the arms of his 14-year-old son. The attacker, who was already known to the police and mental health workers, fled the scene as British Transport Police scrambled to track him down . Once apprehended, it was up to investigators to prove that Lee’s murderer was as unprovoked, as it was ruthless.