Description du livre
Spirou and Fantasio, swallowed by the raging waters of the river,
find themselves in an unknown valley filled with very peculiar, and
very dangerous, life. As they brace themselves to face a hostile
nature long enough to find their way out, Fantasio contracts a deadly
disease that turns him into a homicidal maniac. Spirou must now find
a way to save him and himself and escape the deserted valley. If it
really is deserted, that is...