Nick Ward 
Lost Diary of Charlie Small Volume 5 [EPUB ebook] 
The Underworld

Charlie Small is twelve years old when he falls through a gap in space and time and ends up in a series of adventures which he records in a diary format. Packed full of fun illustrations, maps and clever inventions, Charlies fifth adventure takes him to the depths of the Underworld where he must use all his quick wit and skill to outwit the spitting spidion — and he must watch out for his old nemesis, Joseph Craik!