In a quiet northern Mexican town, rumors swirled about a bizarre case: a mother-in-law and daughter-in-law pregnant at the same time.

It began when Esteban left for Canada and his father, Don Ernesto, supposedly went to Oaxaca. Left behind were Esteban’s wife, Daniela, and his mother, Doña Rosa María.

Months later, both women were pregnant—raising eyebrows, since Esteban had been gone for over seven months.

Still, the women lived peacefully, supporting each other through their pregnancies. Then, one winter morning, they went into labor at the same time and were rushed to the hospital.

There, chaos erupted. Rosa María’s baby was born in an unbroken sac with traces of a stimulant. Moments later, Daniela gave birth—and DNA tests showed the babies were half-siblings.

Esteban couldn’t be the father.

Security footage revealed the real one: Don Ernesto, who had secretly been living nearby and had relations with both women.

The truth shattered the family. Ernesto vanished. Rosa María grieved in silence. And Daniela, devastated, now had a child fathered by her father-in-law.