De pura sangre (English title: Of pure blood) is a Mexican telenovela produced by Ernesto Alonso for Televisa in 1985.

This is the promise very happy thinking that his future wife will own a fortune, but, to his horror, Florencia will inherit only a small part of the money; the rest of the fortune of Don Alberto and the estate will pass into the hands of a stranger from Madrid, Alberto Salerno.

Homero, uncle of Leonardo interested as he performs plans for Alberto is arrested for drug trafficking on the way to Mexico.

Meanwhile, Leonardo married Florencia and encouraged to contest the will due to the absence of the primary heir, and so she becomes mistress of everything but name only.

However, almost a year later, Alberto escapes from prison during a fire and heads to San Miguel Allende with the idea of revenge in mind.