"Falling Sideways" by Tom Holt is a fantasy novel published in 2002 by Little, Brown Book Group. The hardback edition has 416 pages and is in English language. The book follows the adventures of Professor Piggott and his assistant, Marianne, as they explore the magical and mysterious world of falling sideways. With its engaging plot and witty humour, this novel is sure to captivate readers and transport them to a whimsical and enchanting realm.