Marcia Yance

Al filo de la muerte is a Mexican telenovela produced by Emilio Larrosa for Televisa and originally broadcast on Canal de las Estrellas from June 17, 1991, to February 21, 1992. Created by Fernanda Villeli and Marcia Yance, the telenovela stars Humberto Zurita and Gabriela Rivero. The story follows Tracy López, a young nurse living in Los Angeles whose life is turned upside down after she witnesses her boyfriend commit a murder. Placed in the Witness Protection Program under the new identity of Mariela Foret, she flees to Mexico City, where she begins working at a prestigious hospital. There she meets cardiologist Francisco Riquer, and despite their difficult first encounters, they fall in love while facing danger, revenge, and the lingering threat of Tracy's criminal past.

La sonrisa del diablo is a Mexican telenovela produced by Ernesto Alonso for Televisa and originally broadcast on Canal de las Estrellas from February 24 to July 31, 1992. It is the second adaptation of the 1970 telenovela of the same name, originally created by Luisa Xamar, and was adapted by Fernanda Villeli and Marcia Yance. The story follows Déborah San Román, a beautiful and ambitious young woman who stops at nothing to achieve wealth and power. After marrying a wealthy widower while secretly maintaining a relationship with her unscrupulous lover, she manipulates and betrays everyone around her. As her web of lies and crimes grows, love, honesty, and justice begin to threaten her ruthless ambitions.

A Mexican telenovela produced in 1996. It was the last historical telenovela produced by Televisa. The plot tells the Independence of Mexico, with an emphasis on historical accuracy.