Valériane de Villeneuve

Franck and his girlfriend Sonya, plus some of their friends go on holiday in Brasil. Franck, his friends, two girls and Sonya's grandmother leave to visit a cave, but everything goes wrong and their crazy adventures begin.

Prudence Beresford is investigating another murder. Her aunt had witnessed it, but no body was found, and nobody trusted her word. Nobody, except Prudence, of course!