Prisoners of Walls

Searching all over, ripping tapestries down
tearing at mouldy floor boards and banging walls
but nowhere, nowhere whatsoever is it to be seen

Exasperated I lean against the door
let my entire body sink into the pane
become the door, framed by solid walls
and still, nothing to be seen
neither from within nor from without

What is this, a riddle of forlorn souls?
Scratching all the doors from within
never appearing except framed in by walls