She arrived in Barcelona in 1888 and began working as a maid, but found that she could earn more working as a prostitute. A quick learner, she took the chance to overhear the perverse secrets of the wealthy. Soon she opened a brothel, prostituting children ages 5 through 14 to the city's rich pedophiles. Always adept at capturing children, she would dress in rags and visit the destitute Raval district, where the children looked the most abandoned. She could then go to the galas at the opera house in all of her finery, meeting with her clients. In 1909, her brothel was discovered by police, but her wealthy contacts intervened, saving her from prison.
Enriqueta's next move was the cosmetic needs of the wives and mistresses of her clientele; she began procuring children ages twelve and under, killing them and using their bone marrow, blood, and fat as face creams, love potions, charms, and cures for typhoid, tuberculosis, syphilis, and other diseases. In February, 1912, the reports of six-year-old Teresita Guitart's abduction and a suspicious neighbor's sighting of the missing girl led to Enriqueta Martí's downfall. Her list of contacts was discovered among bloody clothes of children, knives, scalps of blond hair, jars of blood and fat, various scorched bones, and an old book of potions.
The high-class women who brought Enriqueta's "face creams" knew where these products came from, but a street child was little more than a piece of trash to them.
The police arrived in time to save Teresita and another six-year-old, Angelita, but too late to save Pepito, a boy of the same age; Angelita saw Martí kill him and serve his flesh as a meal.
Enriqueta Martí was killed in 1913 by her fellow inmates, but none of her clients was ever brought to justice.