H.P. Lovecraft's The Case of Charles Dexter Ward

Charles Dexter Ward hasn’t seemed himself since traveling to strange lands and keeping stranger company, all in the pursuit of information on a notorious ancestor, Joseph Curwen. Rumored alchemist and practitioner of the occult, Curwen died violently, and Charles became obsessed with finding his unmarked grave. Performing bizarre experiments and chants inside his room, Charles claims to have rediscovered secret knowledge his ancestor possessed that could revolutionize the world. When his erratic and dangerous behavior at last gets him committed to an insane asylum, Charles seemingly escapes…and only his family physician, Dr. Willett, suspecting a hideous truth, now has the courage to pursue the strange case of Charles Dexter Ward! Source: Dark Horse