[1] It revolves around an Argentine Federal Police agent who infiltrates a Jewish community to gather information, which was apparently used to carry out the terrorist attacks against the Israeli embassy in 1992 and the AMIA in 1994.

[6] In February 2017, it was announced that the Argentine production company Oficina Burman had joined Mediapro to develop several projects to launch internationally, including the adaptation of the book Iosi, el espía arrepentido written by Horacio Lutzky and Miriam Lewin, and which tells the real story of an Argentine policeman who infiltrates a Jewish community.

[18] On 17 May 2018, it was announced that Natalia Oreiro, Gustavo Bassani, Marco Antonio Caponi, Alejandro Awada, Juan Leyrado, Matías Mayer and Minerva Casero had joined the show's main cast.

[21] Although the filming took place mainly in Montevideo, several towns in the Canelones Department, such as Progreso, Cerrillos, La Paz and Paso de Carrasco were also included.

[22] Raúl Kollmann of Página 12 gave a positive review and wrote: "Iosi, el espía arrepentido makes visible what that time was and what the infiltrators of the Federal Police were.