Which sentence from Exploring the Titanic indicates a shift in tone?

If you are taking edginuity i think its the smell of of hot butered popcorn filled the room

In straightforward text, he combines the story of the ship's first and final voyage with that of its rediscovery and exploration, skillfully capturing all the drama of both significant events. Talented maritime artist Ken Marschall provides stunning paintings, which give imaginative substance to Ballard's words. They join clear diagrams and current and period photographs to illuminate the technically accurate and lucid explanations, ensuring that curious readers have a wealth of information and detail at their fingertips.