A twisted killer who was deemed to have an "untreatable psychopathic disorder" is set to walk free, sparking fresh warnings to a parole board. Reginald Wilson, 61, who switched his surname to Zenshen, bludgeoned father-of-three David Birkett to death, in Middlesbrough in 1990. Despite two Government attempts to prevent his release, the Parole Board denied the requests. However, the decision has triggered further backlash, with MP for Middlesbrough and Thornaby East, Andy McDonald, slamming the