El Juramento (2008)

Santiago de Landeros (Osvaldo Rios) discovers that his brother, Diego Platas (Harry Geither), committed suicide because the woman he loves leaves him because he was a poor man. Santiago swears on his brother's name to get vengeance for his death. He begins investigating who the woman is and the only thing he finds is a woman handkerchief with the letter "A" engraved on it. He deduces that this is the first letter of the woman's name he is looking for.

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Santiago de Landeros (Osvaldo Rios) discovers that his brother, Diego Platas (Harry Geither), committed suicide because the woman he loves leaves him because he was a poor man. Santiago swears on his brother's name to get vengeance for his death. He begins investigating who the woman is and the only thing he finds is a woman handkerchief with the letter "A" engraved on it. He deduces that this is the first letter of the woman's name he is looking for.

Santiago meets Alma (Dominika Paleta) and Andrea (Natalia Streignard); two girls with different personality who are the nieces of Teodoro (Hector Bonilla) and Luisa (Susana Dosamantes) Robles-Conde, one of the richest families of the city of Queretaro. When Alma discovers Santiago's intentions, she manages to make him believe that Andrea is the woman he is looking for.

Santiago convinced that Andrea is the woman responsible of his brother's death, makes her fall in love with him and marries her. His intention is to take her away from her family and make her pay. He is going to give her a life full of pain and suffering.