The collection opens with the misadventures of a penniless stranger in London who is unexpectedly given a million-pound bank note by two eccentric brothers as part of a wager. Unable to change the note without arousing suspicion or arrest, the protagonist discovers that simply possessing the vast sum grants him limitless credit, social notoriety, and unexpected wealth. As he navigates the absurdities of London high society, he manages to save a friend's mining investment and eventually wins the hand of the woman he loves, all while proving the peculiar power of the note. Beyond this famous tale, the book includes a series of essays and observations on what the author terms mental telegraphy.
Through personal anecdotes and documented coincidences, the author argues that minds can communicate across vast distances without spoken words or physical signals. He recounts instances where letters crossed in the post at the precise moment of composition and describes how thoughts seemed to travel between acquaintances separated by continents. The volume also features a sharp, affectionate critique of an obscure nineteenth-century Southern romance, highlighting the sheer linguistic brilliance of unintentional melodrama. Throughout the collection, the author maintains a balance between playful satire and genuine curiosity about human behavior, coincidence, and the quirks of fate.