Halo: The Flood is a science fiction novel by William C. Dietz, published by Gallery Books in 2019. The book, part of the Halo Ser., explores themes of action, adventure, space opera, and military science fiction, with a media tie-in to the popular Halo video game series. With 416 pages, the trade paperback format includes illustrations and weighs 11.2 ounces. The novel is written in English and is a must-read for fans of the Halo universe and science fiction enthusiasts alike.