The magazine "La Voz" is based on an actual Tijuana weekly "Zeta". The reporter, Andrea Nuñez, is based on Adela Navarro Bello, who is (as of 2021) the general director of "Zeta". As in the series, Zeta's editorial offices are in San Diego, for safety reasons. Two of Zeta's editors have been murdered, and a third one survived a murder attempt.