Possible Clues:

• Allow fictional AI character to become mortal
• This might allow Henry to be the death of you
• Having the potential to kill
• "— Weapon" (Gibson/Glover film)
• Does this allow him to be murderous?
• Obstruction by Henry proves fatal
• Allow Henry to be for 36 across
• Toxic litre - alcohol, knocking number out
• ''--- Weapon''
• --- Weapon, Mel Gibson film