Kidnapped

A dashing classic adventure with loads of action to keep the story moving. It's got a very nasty villain and a mostly very good hero. The hero's friend is both good and bad together. Each main character is strongly drawn and memorable, though the story is focused more on action than on motivation by a long shot.

The action indeed is incessant and often heavy, from shipboard to progress across land.

This classic definitely has reason for being one and I'll be reading the sequel this year.