The Witch's Lair

Even in this modern era there is magic, but it taints, corrupts, turning saints into power-mad monsters. It can not be stopped but it can be contained, sometimes. That is what the Poor Brothers of Gethsemane, AKA the Inquisitors, do. They fight monsters in the shadows, they contain the madness. Thaddeus the mighty and wicked warlock is gone, but not by the hands of The Inquisitors. Another, perhaps even more powerful magi is scheming, and the Brethren must stop him or her. But first they must make sure no one returns from the fight tainted, the dead are buried, and figure out how to find a ghost of a magi who can summon a Gut Ripper in the middle of a firefight and then disappear.
Sebastian is still tormented by the ghost of his murdered wife, still trying to honor his promise to her, but now there is another woman entering his mind, and his dreams have gotten even more disturbing.
The Master Hammer warned Sebastian he was walking a dark path when he agreed to be Malachi's apprentice. That dark path will take them from the deserts of Arizona, to the rotting inner core of Portland, to the Cascade Mountains, and deep under the earth.
Yes, Sebastian has fellow Inquisitors ready to assist, some friends since his earliest days in the Brethren, others newly met. Formidable warriors against the darkness, but is that enough to keep Sebastian safe, or sane, when he enters The Witch's Lair?