El Cazador de la Bruja
A Woman Who Conceals (1x13)
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The heroines end up in a town that is supposedly abandoned due to a disease outbreak. Nadie, however, suspects otherwise, which is confirmed when they discover a biological research facility nearby and are ambushed by gunmen wearing protective suits. Separated from Ellis, Nadie enters the research facility to find her but instead finds a shocking revelation about the other girl's past.