Jack was leaning back against a stone wall that had been warmed by the sun, when he heard a faint rustling just behind his head. Turning around, he saw the impression of a small creature, crushed flat, and suspended in the rock – a common enough sight in this type of stone, and known to be a trick of Nature, as when animals were born joined at the hip, or with limbs growing out of the wrong places. The Doctor had another theory: that these had been living beings, trapped and immobilized, imprisoned forever. Now with the weight of all the stone in Paris seeming to press down on him, Jack believed it. He heard that faint rustle again, and scanning the wall carefully, finally saw movement there: between a couple of old scallop-shells and fish-bones, he saw a small human figure, half trapped in the stone, and struggling to get out of it. Peering carefully at this creature, no larger than his little finger, he saw that it was Eliza.