The Warlock Insane - Warlock of Gramarye, #9

HOW CAN YOU FIGHT YOUR OWN MADNESS? Until now Rod Gallowglass, Lord High Warlock of Gramarye, could fight the numerous threats to the kingdom with technology. But when his enemies use a new drug to cloud his mind with horrific visions, Rod faces his most crucial test yet, and Gramarye faces its ultimate challenge. Lost in hallucinations, fighting monsters that aren't really there, he's a danger to his family and himself.
Has he finally lost his mind? Or have his adversaries found a way to not just destroy him, but discredit him as well? Most of all, how can he find his way back to sanity? With a handful of allies real and imagined, battling enemies part real and part delusion, can the warlock win a war on the battlefield of the mind?