Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Dr. Martin Hesselius, a physician and occult enthusiast, attempts to help Jennings, a clergyman plagued by an ethereal demon. As Hesselius gets closer to finding a ’cure’ for Jennings, the demon’s attacks increase in frequency and severity. Unsure whether the affliction is psychological or supernatural, Hesselius contacts an associate in an attempt to prevent the clergyman’s destruction.