The informant who became the courier
Molina, jailed for 'corruption of minors,' is secretly placed in Valentín's cell by the warden. He is promised parole if he extracts the names of Valentín's guerrilla comrades. Instead he nurses Valentín through deliberate food poisoning, becomes his lover, and on release carries a message to the revolutionaries, only to be shot dead during the handoff, the loyalty he chose rather than the one he was recruited for.