The Wrong Box is a black comedy novel co-written by Robert Louis Stevenson & Lloyd Osbourne, first published in 1889. The story is about the last two remaining survivors of a tontine, who also happen to be brothers.
The book is notable for being the first of three novels that Stevenson co-wrote with Osbourne, who was his stepson. The second was The Wrecker (1892) and The Ebb-Tide (1894) was the third. Osbourne wrote the first draft of the novel late in 1887 (then called The Finsbury Tontine), Stevenson revised it in 1888 (then called A Game of Bluff) and again in 1889 when it was finally called The Wrong Box.

Film adaptation
Rudyard Kipling, in a letter to his friend Edmonia Hill (dated September 17 1889), praised the novel: "I have got R.L. Stevenson's `In the Wrong Box' and laughed over it dementedly when I read it. That man has only one lung but he makes you laugh with all your whole inside".