Sarah Green has come a long way from the traumatized attorney who jettisoned her life in Boston and fled to Maine after the murder of her friend Miriam Moss. With effective trauma treatment and a new graduate degree, Sarah has accepted her psychic skills, adjusted to ghostly conversations with Miriam, and settled into an enjoyable counseling practice. With good friends and a new romance, life is sweet—until the man in prison or murdering Miriam requests mediation. When Sarah meets Reginald Harper, he not only denies murdering Miriam, he stuns Sarah with a wild tale of bioweapons experiments that turned ticks into carriers of virulent enhanced infections such as Lyme disease. Sarah can't get away from Lyme—it's disabling a friend and a client. Before long, Sarah enlists her friends and ex-husband, Ryan, in a dangerous search for answers: Is Harper delusional or telling the truth? Did Harper kill Miriam, and if not, who did? Despite misgivings, Sarah is soon tackling what may be the biggest threat to her life—a conspiracy of people willing to kill to keep dark secrets buried.