On 5 April 1905, Weber invited two of her sisters-in-law to dinner, and remained home with her 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 29 January 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 Weber was being defended by the brilliant defense lawyer Henri-Robert, and jurors were reluctant to believe the worst about a grieving mother. She was acquitted on 6 February.