Oh My stronghold is fine really just a slight bug when im in it there's the combat music and i can't rest. It says there's enemys near i've done a strenous investigation no critters. My question is does any one know a consol command to fix this any help would really be appreated.

have you tried leaving your strong hold and coming back?
does it allow you to sleep?

Which stronghold is that?

My guesses is that the creature were in that cell when that stronghold " appear " .

OR

The creature sunk to the wall/ground and unable to do anything.

try typing RA in the console or do what Too Darkpark mention.