Lit only by scattered torches, The dungeon lies far underneath the castle.  Bandits and Thieves who find themselves there are met with cold stone walls and floors, with chains and bars restricting movement.  Guards patrol the corridors, keeping an eye out for any escape attempt or misdeed.  The only comforts afforded in the Dungeon are the piles of hay for sleeping.
Dungeon, Inside Castle
rat
criminal
I am a criminal who has been falsely accused of treason. I have been sentenced to die . I will try to escape today.
I must be hallucinating. I am sure I heard a smal voice  of course you are  Well, at least I have one friend in this hell-hole .. greetings, good if silent roach  ok for hugging me i will reconsider being your friend I didn't hug YOU .. I hugged the roach. But I suppose I can hug you too. There's precious little company here  bad bad thief But - I hugged you! And there is no-one here but us! ok lets be friend ok, no more fighting I only agree because it's so dank and depressing here  no thats not true To you perhaps it's paradise  you insulting me?