Knock, Knock ...

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Overview:

2018 . 100 Word Horrors (2018, C. S. Anderson, KJK Publishing, $1.34, ebook, Anthology)
2018 . 100 Word Horrors (2018, C. S. Anderson, KJK Publishing, ISBN-10: 9781984382054, $5.99, 126 pages, Trade Paperback, Anthology)
2018 . 100 Word Horrors (2018, C. S. Anderson, KJK Publishing, ISBN-10: 9780244965129, $13.90, 126 pages, Hardcover, Anthology)