: "La mujer que barre" (The Woman Who Sweeps) refers to an apparition or urban legend involving a woman heard or seen sweeping at late hours—a sound often associated with omens of death or repetitive spectral loops in Mexican folklore.

: It blends documentary research with dramatization. Cases like those of Sergio Torres are presented as "official versions" of events that have been collected by the program over decades.

: Many of these iconic stories, including those involving investigators and specific entities, are compiled in the official book "Relatos del Lado Oscuro" .