July 21, 1958. Madrid wakes up to the news that a pawnbroker has been murdered in his shop. Soon, police finds that the victim's associate, his pregnant wife and their maid have been murdered as well in their own home across the street.
| Writing | Pedro Costa Musté | Original Story |
| Writing | Alfredo Mañas | Writer |
| Editing | Pablo G. del Amo | Editor |
| Directing | Juan Antonio Bardem | Director |
| Production | Martín Cabañas | Producer |
| Sound | José Nieto | Original Music Composer |
| Writing | Juan Antonio Bardem | Writer |
| Camera | Magí Torruella | Director of Photography |
