The Vernon Case

"Janet Markham doesn’t like coincidences. When she and her sister Joan spend a day running errands and she keeps seeing the same man over and over again, it worries her. When that same man nearly dies of a drug overdose that evening, Janet is even more concerned.
Another day, another man who keeps crossing Janet’s path, and then another drug overdose worry her even more.
Is someone in Doveby Dale, the village the sisters call home, dealing in drugs?"