The show would culminate with one of the mundanes volunteering to go on stage.  While Brian goes to put his hand up, the kobold quickly grasps his wrist and pulls it down.  He knows, and Liz would probably suspect, what would happen next.  The 'man' on stage prepares everyone for the whole 'putting your head in the creature's mouth' gig.  But Liz would take note of the fact the glamour became increasingly thick at that point in time.  The crowd never noticed a doppelganger, some gray-skinned, extremely lithe fellow, touch the man as he came on stage.  Just that little touch was all he needed to take on the physical appearance.  The rest would be explained later.<br/><br/>When the mundane bent over, laughing as he rested his head in the beast's maw, the half-demon gestured with a finger.  The beast's jaws clamped shut, decapitating the poor mundane.