someone has been reading your books.
that explains the slight disorder in your room
how things aren't where you thought you left them
the creases that appeared in pages overnight
the dog-eared spines on books you hardly read
and contrapuntal notes inscribed in margins.

that explains the half-smiles and sly glances
of the people on the stairs
who just had time to close the door
run up a flight or so
then make their way down past you
masked as strangers
pretending to go shopping.