One Word - Supernatural

Title: One Word
Author: domina_malfoy
Fandom: Supernatural
Pairing/Rating: reader's choice of Castiel/Dean or Gen, G
Word count: 100
Disclaimer: I don't own or claim to own anything from Supernatural.
Warning: Angst.
Prompt: Prompt #014 from deancas100.
Summary: One word is all it takes to end one life but save millions.

( One Word )