Martha Carrier was originally of Andover, and although extremely courageous, her forthright and rebellious rebuttals suggest a highly abrasive personality. To several of the magistrates questions at her trial, her arguments consisted solely of the facts that the girls were dissembling, and that the devil was a liar. Once, when asked by the judges, "What black man did you see?" she snapped back, "I saw no black man but your own presence." Further in her testimony, she declared, "It is a shameful thing that you should mind these folks that are out of their wits."

Martha's case was damaged further when her two teenage sons, accused of witchcraft themselves, confessed and testified against her. In a letter, John Proctor stated that the boys had been tied at the neck and heels, and had testified against their mother, "until the blood was ready to come from their noses." Unlike most of the accused children who turned against their parents, however, the boys did not recant when their mother faced the gallows. Martha's eight year-old daughter claimed that her mother came to her in the form of a black cat while in prison to afflict her.

Martha Carrier was hanged on Gallows Hill, August 19, 1692.