There are strong African characters as well as the American protagonists. Windle doesn't give away the romantic resolution since she doesn't follow the romance writer's convention of alternating points-of-view between the romantic leads. Instead she alternates with villains and rebels and we aren't at all sure how things will turn out.
Although the ending is satisfying, it is not neatly tied up with the bad guys punished and the good guys living happily ever after. Check the internet—the unrest in Congo has not ended. But the story does end with hope—hope in Jesus Christ who loves us in our pain and does not abandon us in our suffering.
While I was reading Congo Dawn, I saw the film version of Les Miserables. I found myself thinking of the epilogue:
Do you hear the people sing
Lost in the valley of the night
It is the music of a people
Who are climbing to the light.
For the wretched of the earth
There is a flame that never dies;
Even the darkest night will end
And the sun will rise.
They will live again in freedom
In the garden of the Lord
They will walk behind the plough-share
They will put away the sword.
The chains will be broken
And all men will have their reward!
Even in Congo, the darkest night will end and the sun will rise. Jesus reigns.