Written by Sheridan Le Fanu in the mid-19th century, "Green Tea" is a masterwork of psychological supernatural fiction presented as a case study by the mysterious German physician Dr. Martin Hesselius. The narrative unfolds through letters describing the disturbing affliction of Reverend Mr. Jennings, whose obsessive study of pagan metaphysics and consumption of green tea seem to have opened a doorway to something inexplicable and terrifying. Readers should expect a slow-burning, deeply atmospheric exploration of the boundary between mental illness and genuine supernatural encounter.