The files at the office of Dr. Peters brings the team closer to the identity of the Shock Killer copycat. Katie tries to learn more, but it seems as if she is stymied at every turn. Her attempts to learn more from the medical folders, her brother’s material possessions, and the Epi-pens all fail. She hopes that she might learn more from a call purporting to be from Dr. Peters, who leaves her information. However, the killer has other plans that involve Katie – and a shock of her own.