River Heights has fallen prey to an epidemic-of crime. George has taken a job at the local pharmacy, and some of her deliveries have proved disastrous. Two customers have fallen seriously ill, and a third has died. Nancy is convinced that foul play is involved, and her suspicions are soon confirmed. The investigation centers around a case of sabatoge, and for Nancy it's a sure prescription for danger. Her hunt for clues leads into a tangled web of secrecy, deceit, and revenge that puts her own health at risk- as she seeks out the cure for a sinister brand of crime.