Answer:
People are hired to get rid of me. I'm often hiding under your bed. In time I'll always return you see. Bite me and you're surely dead.
When set loose I fly away. Never so cursed as when I go astray.
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.
Tool of thief, toy of queen. Always used to be unseen. Sign of joy, sign of sorrow. Giving all likeness borrowed.
What can be swallowed, but can swallow you?
Why was the cook arrested?