Der geheime Teilhaber

Blurb

"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.
The story was filmed as a segment of the 1952 film Face to Face.
The Secret Sharer was adapted to a one-act play in 1969 by C. R. Wobbe. The play was published in 1969 by the Dramatic Publishing Company.
A new film, Secret Sharer, inspired by the novella and directed by Peter Fudakowski, was released in the UK in June 2014. Secret Sharer website