Possible Clues:

• Thin heel
• Short dagger; shoe heel
• Kind of heel to use such a weapon?
• Blade on fire returned during fight
• Weapon of test pilot malfunctioned, having lost pressure
• Work of TS Eliot pierced by terrorist leader's weapon
• It's best I let Tom hold a knife
• Dagger; tapered heel
• The point of this is that I allow it to be fatal in the tots
• Lest I worry the tot by brandishing the weapon