Catherine takes apart a raven's nest, takes out a baby toy and puts it aside; she then shows the nest to Grissom, and the toy is back in the nest.
Grissom misquotes Edgar Allan Poe's "The Raven" by saying, "Quoth the raven, 'Only this and nothing more.'" The correct quote is either "Quoth the raven, 'Nevermore'" or "'Tis some visitor," I muttered, "tapping at my chamber door - Only this, and nothing more."