dark week
n.— «Demand has been so strong that booksellers and wholesalers were unable to get copies a short time after it hit stores, creating what the publishing industry calls a “dark week.” One experienced publishing veteran suggests that Mr. Hitchens will likely earn more than $1 million on this book.» —“Hitchens Book Debunking The Deity Is Surprise Hit” by Jeffrey A. Trachtenberg Wall Street Journal June 22, 2007. (source: Double-Tongued Dictionary)