Explain how some accidents turn out to be lucky events

Fortuitous means by chance, like a lucky accident. If you and your best friend's families happen to go on vacation to the same place at the same time, that's a fortuitous coincidence! Something fortuitous is random like an accident, but there's no downside.

explanation:

because i dont know

from the excerpt from the "the dark game" the reader can infer that folke cronholm was spying for the allied nations.