Eve of Warfare

From Author Wars - https://authorwars.com/books/eve-of-warfare-1240789.html

Overview:

2010 . The Mammoth Book of Paranormal Romance 2 (2010, S. J. Day, Robinson, ISBN-10: 9781849013703, £7.99, 512 pages, Trade Paperback, Anthology)
2010 . The Mammoth Book of Paranormal Romance 2 (2010, S. J. Day, Perseus Books, ISBN-10: 9780762439966, £7.99, 512 pages, Paperback, Anthology)
2010 . The Mammoth Book of Paranormal Romance 2 (2010, S. J. Day, Perseus Books, ISBN-10: 9780762439966, $13.95, xi+531 pages, Paperback, Anthology)
2010 . Eve of Warfare (2010, S. J. Day, Sylvia Day, ISBN-10: 9780982857137, $2.99, ebook, Chapter Book)
2012 . The Mammoth Book of Paranormal Romance: Volumes 1 and 2 (2012, S. J. Day, Robinson, ISBN-10: 9781472105073, £9.98, pages, ebook, Omnibus)
2013 . Marked: Warfare and Sin City (2013, S. J. Day, Sylvia Day, ISBN-10: 9781468190458, $9.99, 124 pages, Trade Paperback, Collection)
2019 . Marked: Warfare and Sin City (2019, S. J. Day, Sylvia Day, ISBN-10: 9781626509993, $3.99, pages, ebook, Collection)