Cold-eyed killer with a sickening lust for murder, humiliation and torture: beheads FOUR.

                                 

The Briton has been seen murdering Briton David Haines, and US journalists James Foley and Steven Sotloff but they also believe he has overseen the brutal torture of hostages in his charge.    

Cold-eyed killer with a sickening lust for murder, humiliation and torture: Hunt for Jihadi John steps up as masked monster beheads his FOURTH victim in chillingly familiar style