In Channel 4 s Police Custody: The Murder of Rikki Neave, which airs tonight, police discuss the original investigation in Peterborough after he was killing in November 1994.
Rikki Neave s sister Rochelle says she still holds their mother - who beat and neglected the six-year-old - accountable for his death despite James Watson s conviction.
Rikki, pictured, was found stripped naked, left in a star pose and strangled in a woods near his home in Peterborough, the day after he was reported missing in November 1994.