Stanley G. Weinbaum 
The Dark Other 

'The Dark Other’ is a science fiction short story written by Stanley G. Weinbaum in 1930. The story follows a psychologist named Henry Hassel who becomes fascinated with a patient named John Thorne, who claims to have psychic abilities. As Hassel delves deeper into Thorne’s psyche, he discovers that Thorne is able to communicate with a malevolent entity called 'the Dark Other.’ The story builds to a thrilling climax as Hassel and Thorne confront the Dark Other in a psychic battle for control. Weinbaum’s writing is evocative and atmospheric, creating a sense of tension and unease throughout the story.