Born during 1875, at a small fishing village in northern France, Weber left home for Paris at age 14, working various menial jobs until her marriage in 1893. Her husband was a drunkard, and by 1905, with two of their three children lately deceased, Jeanne was also drinking heavily, residing in a seedy Paris tenement with her spouse and a seven-year-old son.

On March 2, 1905, Weber was babysitting for her sister-in-law, when one of the woman's two daughters -- 18-month-old Georgette -- suddenly "fell ill" and died. Strange bruises on her neck were ignored by the examining physician, and Jeanne was welcomed back to babysit on March 11. Two-year-old Suzanne did not survive the visit, but a doctor blamed the second death on unexplained "convulsions."

Weber was babysitting for her brother, on March 25, when his daughter, seven-year-old Germaine, suffered a sudden attack of "choking," complete with red marks on her throat. The child survived that episode, but she was less fortunate the following day, when Aunt Jeanne returned. Diptheria was blamed for her death -- and for that of Weber's son, Marcel, just four days later. Once again, the tell-tale marks of strangulation were ignored.

On April 5, 1905, Weber invited two of her sisters-in-law to dinner, remaining home with 10-year-old nephew Maurice while the other women went out shopping. They returned prematurely, to find Maurice gasping on the bed, his throat mottled with bruises, Jeanne standing over him with a crazed expression on her face. Charges were filed, and Weber's trial opened on January 29, 1906, with the prosecution alleging eight murders, including all three of Weber's own children and two others -- Lucie Aleandre and Marcel Poyatos -- who had died while in her care. It was alleged that Weber killed her son in March to throw suspicion off, but jurors were reluctant to believe the worst about a grieving mother, and Weber was acquitted on February 6.

Fourteen months later, on April 7, 1907, a physician from the town of Villedieu was summoned to the home of a peasant named Bavouzet. He was greeted at the door by a babysitter, "Madame Moulinet," who led him to the cot where nine-year-old Auguste Bavouzet lay dead, his throat badly bruised. The cause of death was listed as "convulsions," but the doctor changed his tune on May 4, when "Madame Moulinet" was identified as Jeanne Weber. Held over for trial, Weber was released in December, after a second autopsy blamed the boy's death on "typhoid."

Weber quickly dropped from sight, surfacing next as an orderly at a children's hospital in Faucombault, moving on from there to the Children's Home in Orgeville, run by friends who sought to "make up for the wrongs that justice has inflicted upon an innocent woman." Working as "Marie Lemoine," Weber had been on the job for less than a week when she was caught strangling a child in the home. Embarrassed by their own naivete, the owners quietly dismissed her and the incident was covered up.

Back in Paris, Weber was arrested for vagrancy and briefly confined to the asylum at Nantere, but doctors there pronounced her sane and set her free. She drifted into prostitution, picking up a common-law husband along the way, and on May 8, 1908, the couple settled at an inn in Commercy. A short time later, Jeanne was found strangling the innkeeper's son, 10-year-old Marcel Poirot, with a bloody handkerchief. The father had to punch her three times in the face, with all his might, before she would release the lifeless body.

Held for trial on murder charges, Weber was declared insane on October 25, 1908, packed off to the asylum at Mareville. Credited with at least ten murders, she survived two years in captivity before manually strangling herself in 1910.