The Master Problem is a novel written by James Marchant and first published in 1917. The story revolves around the character of John Cavendish, a brilliant but eccentric inventor who has created a machine that can solve any problem presented to it. However, the machine is stolen by a group of criminals who plan to use it for their own nefarious purposes.Cavendish sets out to retrieve his invention and enlists the help of a young woman named Dora Weldon, who becomes his assistant and partner in the quest. Together, they embark on a thrilling adventure that takes them across Europe and into the heart of the criminal underworld.The novel is a classic example of early 20th-century adventure fiction, with a fast-paced plot, colorful characters, and plenty of action and suspense. It also explores themes of science, technology, and the ethics of invention, as Cavendish grapples with the potential consequences of his creation falling into the wrong hands.Overall, The Master Problem is a gripping and entertaining read that will appeal to fans of classic adventure stories and early science fiction.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.