Related Clues:

• Quiet, shy chap to turn into a violent one
• Chappy shot at random — he had a behavioural disorder
• One emotionally unstable, often violent
• No remorse for antisocial behaviour on road to Bates Motel perhaps
• Girl receives extremely scary cut, given by hard nut
• One with abnormal or violent social behaviour
• Violent criminal blocking way with extremely scary axe
• Crazy paving dreadfully disturbed individual
• Who's not normally shy, apt to grab axe?
• The Joker, e.g
• Mind course taken by mentally unstable person
• Film direction taken by mental case
• Old film track -- one needing treatment
• Violent unstable type of old film direction
• Half the bunch of flowers cut into pieces in trail recognised by profiler