Answer:
It is a gruesome form of betray.
What is the word that even in plain sight remains hidden?
Pointing North, South, East, and West it saves the lost and helps the rest. What is it?
They keep secrets locked away. And you pass through them each day. For each one there is a key, They respond to sesame.
What do you have in December that you don't have in any other month?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?