ISIS latest execution video: Syrian prisoner is killed with a shotgun at point-blank range

The latest graphic and shocking footage has all the militants' trademark slick production effects and features a light-skinned executioner (inset) dressed in similar costume to the now infamous 'Jihadi John'. The killer is seen ranting in Arabic behind the doomed prisoner (main image) before the HD footage is edited into slow-motion and the militant is seen catching the shotgun, thrown to him by somebody off camera. Seconds later he fires a single round into the back of the victim's head causing horrific injuries far too graphic to publish.