September 1930. In Lisbon, two personalities meet who could not be more different: the English occultist, magician, visionary, and poet Aleister Crowley, notorious for his capricious lifestyle, and the poet Fernando Pessoa. Their heated friendship ends with Crowley's sudden disappearance. A mysterious farewell letter surfaces, fueling speculation that Crowley may have taken his own life at Boca do Inferno in Cascais. No body is found, the police get involved, and the event is covered in the international press. Suicide, murder - or one of Crowley's antics? Steffen Dix will present the story for the first time through documents with narrative transitions, unraveling many mysteries that lead to the core of Pessoa's work.