Create a suspenseful scene using sounds, smells, and feelings. For instance, if the air turns icy cold a character may suddenly see their breath bloom in a frosty balloon, a strong floral scent in a room could mark the presence of an entity, or the hair on the back of the neck prickling can create suspense. Bring the reader to the edge, make them hungry to know what it is they don't see by providing evidence that it is there.
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Buy Donna Sundblad's book on Kindle: Pumping Your Muse, Windwalker, Beyond the Fifth Gate, The Inheritance