Four idiot brothers imitate a slaughter
The Mazzini-Ferraz couple have four sons who, after childhood meningitis-like fevers, become severely mentally disabled; the parents' mutual blame and neglect grows, and they lavish care only on their healthy daughter Bertita. One day the brothers watch the maid decapitate a chicken in the kitchen, and later, left unattended, they seize their sister and kill her in the same way. The case shows violence transmitted by mimicry rather than malice, arising from a household where love was rationed and blame displaced onto the unlovable.