Robert Calef wrote a book denouncing the ongoing Salem Witch Trials, the hearings and prosecutions of people accused of witchcraft in colonial Massachusetts in 1692 and 1693.
He was the author of , a book composed throughout the mid-1690s denouncing the recent Salem witch trials of 16921693 and particularly examining the influential role played by Cotton Mather. The Salem witch trials were a series of hearings and prosecutions of people accused of witchcraft in colonial Massachusetts between February 1692 and May 1693. 
