Four on the Floor with Mary SanGiovanni
Mary SanGiovanni is an award-winning American horror and thriller writer of over a dozen novels, including the Hollower trilogy, Thrall, Chaos, the Kathy Ryan series, and others, as well as numerous novellas, short stories, and nonfiction. Mary is a member of the Authors Guild, the International Thriller Writers, and Pennwriters. She is a cohost on the popular […]
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