Relaciones Peligrosas, originally known as Fisico o Quimica, is a Spanish-language telenovela produced by United States-based television network Telemundo Studios, Miami. It is an adaptation of the Spanish television series Física o Química. It has Sandra Echeverría, Gabriel Coronel, Maritza Bustamante, Gonzalo García Vivanco, Jonathan Freudman, Mercedes Molto, Carlos Ferro, Daniela Navarro, Renato Rossini, Kevin Aponte and Ana Layevska in the leading roles of the plot.

In the glamorous world of New York City, Rebecca Bloomwood is a fun-loving girl who is really good at shopping - a little too good, perhaps. She dreams of working for her favorite fashion magazine, but can't quite get her foot in the door - until ironically, she snags a job as an advice columnist for a financial magazine published by the same company.

Wrongfully accused of a crime she didn't commit, 13 year old Guadalupe Santos is sentenced to 30 years in jail, while in jail she gives birth to a baby girl who is taken from her by her older sister Milagros. 15 years later she escapes jail and meets with Daniel Moncada who turns out to be the brother of the man she was accused of killing.

La Revancha is a Venezuelan telenovela that was produced by and seen on Venevisión. This telenovela lasted 247 episodes and was distributed internationally by Venevisión International.

A brave, poor young girl is welcomed into a rich family and develops a romance with their misogynist youngest son, driving a woman already in love with him to go to great lengths to destroy their relationship.