Summary

Eddie hates staying with his cousins - so it looks set to be a really long summer.

Eddie hates staying with his cousins - so it looks set to be a really long summer. But then they visit the amazing caves at Wookey Hole and Eddie is entranced, until he wanders off down a secret passage and gets lost in the dark. Underground, on his own, and nobody knows where he is. Then someone steps out of the blackness to help him . . .