On even the clearest mornings, swirling gray mists sometimes appear in an instant, covering the earth with an opacity that makes it hard to see even one’s own feet on the ground. On this particular September morning it descended at 5:30, about the time Lucinda Cassidy and her companion Fritz, a small dog of indeterminate pedigree, arrived at the cemetery on Vaughan Street to begin their four- mile run along the streets of Portland’s West End and the path that borders the city’s Western Promenade…
