True Believers (The Gregor Demarkian Holiday Mysteries Book 17)

At St. Anselm's church in Philadelphia, a parishioner brings his dead wife's body into the sacristy and takes his own life. The wife, who had severe diabetes, initially appears to have died of natural causes. However, the coroner's examination reveals arsenic poisoning. While police suspect the husband was responsible, a nun at St. Anselm's asks Gregor Demarkian, a retired FBI Behavioral Science Unit head, to investigate. As religious tensions escalate throughout the city, Demarkian faces mounting complications. His lover Bennis is dealing with a personal crisis, and residents of Cavanaugh Street—Demarkian's Armenian-American neighborhood—are caught up in various conflicts. Demarkian finds himself confronting what may be the most difficult case of his career.