The police station of Vallecas, Madrid, received a telephone call late on the night of November 27th, 1990. The scarcely manned police station wasn't at all prepared for what the frantic voice was frothing about over the phone. Mr. Gutierrez claimed he and his wife were plagued by tall shadowy people and strange happenings inside their modest condominium at a near by street address.
Inspector Jose Negri took the case and quickly assembled a small squad of officers to help deal with what he believed to be intruders inside the Gutierrez household. Nothing in their official training would prepare them for what was inside the Gutierrez household.