Death Omens: What to Do When You Know the Worst is Coming is a book sold in Flourish and Blotts. The front cover features a Grim, a large black dog believed to be an omen of death.
Harry Potter first saw the book in 1993 at the bookshop while purchasing the schoolbooks for his third year. Having seen a similar dog a week before, Harry was unnerved by the book. The manager told him not to get too worked up; otherwise, he'd start seeing death omens everywhere.
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