After the success of Tom Sawyer and Huckleberry Finn, Mark Twain brought his three young Missourians back for one more outing in 1894. This time Tom, Huck, and Jim find themselves crossing the Atlantic in a hot air balloon, accidentally hijacked by an unhinged inventor who pilots them straight into the Sahara. The book is short, more novella than novel, and it leans hard into satire rather than the slow river-bend mood of the first two. Tom argues geography with Huck. Jim corrects them both in his quiet way. They cross deserts, dodge lions, mistake mirages for cities, and bicker about the difference between a fortnight and a week. Critics tend to call this one minor Twain. That is fair if you compare it to Huck Finn, but read on its own terms it is funny in the same way a good road trip is funny: three voices who already know each other, riffing on a strange world. If you enjoyed the original two, this one fills in a curious corner of the trio’s history.