Dark-fantasy lovers in the Windy City, this weekend is your last chance to see the hot new stage adaptation of Arthur Machen’s novel The Great God Pan, courtesy of Wildclaw Theatre. When it was first published a hundred years ago, critics despised this tale of a horrific experiment performed upon an innocent young woman, calling it “an incoherent nightmare of sex.” But Pan has proved to be one of the most influential horror stories of all time, inspiring H.P. Lovecraft, Stephen King, Clive Barker, and Weird Tales founder Jacob Hennberger, among many others. Lovecraft went so far as to say: “Of creators of cosmic fear raised to its most artistic pitch, few can hope to equal Arthur Machen.” There are four performances left — reserve seats now!