The Secret Sharer (Webster's Thesaurus Edition) by Joseph Conrad (Jozef Konrad Korzeniowski)

The Secret Sharer" is a short story by Joseph Conrad written in 1909, first published in Harper's Magazine in 1910, and as a book in the short-story collection Twixt Land and Sea (1912). It contains a theme typical for Conrad; he is a solitary character challenged from external and internal agents.
The story takes place at sea, near the Gulf of Siam, and is told from the perspective of a young nameless Captain. The captain is unfamiliar with both his ship and his crew, having only joined their company a fortnight earlier. The Captain is furthermore unsure of himself, questioning his ability to fulfill the role of such an authoritative figure. These themes are explored through symbols throughout the novella.
The story was filmed as a segment of the 1952 film Face to Face.