Beth Becker was late, very late, for her shift. Sheâ€™d already sprinted ten blocks from the bus stop. Despite the autumn air that bit at the acres of flesh left exposed by her Halloween costume, her skin was slick with sweat. She heard little besides the rush of blood swirling in her ears and the incessant thwap thwap thwap of her boot soles as they slapped the cracked sidewalk. But what little she heard was enough.
She stopped for a moment and strained to catch the sound. It was a whine alternating...