a biological weapon? an accident or a test on people?

The book begins harmless enough, a sick man is on the run and takes refuge on an island where he hopes to find food. On this island is already a small group of scouts with their Gruppenleitert, the local doctor. The disaster takes its course as they try to help the sick, because something moves in him and this free them. What is it? A giant tapeworm who eats his victims from within and requires more and more food. Highly contagious and leads quickly to death. And as if that were not enough, draws in a storm and the military locked the islet off and hermetically yes, there's still a boy, a little psychopath who drives his own games with the other.
With a scary book, a good book, a sad book that leaves a sadly suspect that the story is not all that far-fetched.
Very nice I found how the individual boys, their thoughts and fears were portrayed and how they have made the Horror in different ways.
And the slightly evil end, that was the crowning glory.
I can only recommend the book.