It was the author 's first foray into horror , a genre that he would not revisit until Creepers in 2005 .
It was Morrell 's fifth published book , preceded by three novels and one work of non-fiction .
book was the author 's first book into horror , a book that he would not revisit until Creepers in 2005 .
It was Morrell 's fifth published book , preceded by three novels and one work of non-fiction .