Between 1907 - 1917 in Windsor, Connecticut at the Archer Home for the Elderly and Infirm, she picked her victims from the Archer home where she worked.  She killed 48 people in 5 years.   She killed her victims with arsenic and tried to make it appear that they died of natural causes.  Amy also killed two of her husbands.   She was later certified insane and sent to an asylum.