The Sea of Adventure

When Bill takes Philip, Dinah, Lucy-Ann and Jack on a mysterious trip to the desolate northern isles, everything looks sets for an exciting time. But then Bill is kidnapped and the children, marooned far from the mainland, find themselves playing a dangerous game of hide-and-seek with an unknown enemy.

So overall, a good start, and a very nicely detailed setting as usual, but lacking in action and often logic—and a somewhat limp ending. Oh, and it goes without saying that, despite their best efforts to stay out of adventure, naturally Bill and the kids stumble upon the very men Bill had set out to hide from. What are the chances of that?