Advertised as Mr. and Mrs. Martin Johnson's first talkie travelogue, Across the World was actually a "disk lecture," filmed silent but shown with a pre-recorded narration. This time, the adventure-seeking Johnsons offer fascinating glimpses of African cannibals, headhunters and lion hunters. In their usual manner, Martin and Osa "hoke up" the action by suggesting that they're in more danger than was actually the case. As a framing device, Mr. and Mrs. J. are seen in the comfort of their den, screening the film for a gathering of their friends. The couple's next film, Congorilla, would be the first to employ sound on film rather than an after-the-fact narration.