The King in Yellow by Robert W. Chambers

"Beware the Yellow Sign. This cursed play drives its readers to madness—or worse. In a decadent Paris where artists whisper of Carcosa and a masked King who rules the unreal, these eerie tales weave together forbidden art, doomed love, and a horror beyond time. From a sculptor haunted by his own masterpiece to a woman who glimpses the ‘Pallid Mask,’ Chambers’ seminal work blends fin-de-siècle decadence with cosmic dread. Will you dare to read the second act?"