Horrors of the Black Ring is a novella written by R. L. Stine. It was first published in 1999 and was the 18th book in the Goosebumps Series 2000 book series.
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Beth's new teacher, Miss Gold, has been acting strange ever since she found a ring in the school parking lot. She writes scary messages on the board, and her house bums down! When Miss Gold loses the ring, Beth finds it. Suddenly, strange things are happening to Beth. Evil things...