Keziah Mason is a witch who studied the secrets of inter-dimensional travel.
During the Salem witch trials of 1692, an old woman by the name of Keziah Mason was arrested for her suspicious behavior and seeming insight into other worlds. In her testimony to Judge John Hathorne, She confessed to having signed her name in the Book of Azathoth under the influence of the Black Man, and to taking her secret name of Nahab. During her trial she spoke of "lines and curves that could be made to point out directions leading through the walls of space to other spaces beyond...." and when she later disappeared mysteriously from Salem gaol "curves and angles (were) smeared on the grey stone walls with some red, sticky fluid" that were inexplicable even to Cotton Mather.
It was eventually found that by signing the Book of Azathoth she was able to leave to a higher dimension to gain knowledge and serve Nyarlathotep. Studying physicist Walter Gilman believed that Mason--"a mediocre old woman of the Seventeenth Century"—had developed "an insight into mathematical depths perhaps beyond the utmost modern delvings of Planck, Heisenberg, Einstein, and De Sitter." and when he took a room in her house she revealed to that same knowledge to him in the hopes of taking his soul.
She is described as having a "bent back, long nose, and shrivelled chin" and has a "croaking voice".
Behind the MythosEdit
Critics have noted with some surprise that Mason is "struck with panic" at the sight of a crucifix.(EXP: The Azathoth Cycle [Price]) While some have called this overblown and ridiculous, especially considering that Lovecraft was an atheist since he was young, some have taken a different perspective, saying that Keziah might've been psychologically damaged by the tortures inflicted upon her by the men of the cloth in her time, or that she was simply surprised to see that a sharp metal object had been thrust towards her face.