Dr. Benjamin Church, Jr. (1734–1778) was a respected medical man and civic leader in colonial Boston who was accused of being an agent for the British in the 1770s, providing compromising intelligence about the plans of the provincial leadership in Massachusetts as well as important information from the meetings of the First Continental Congress in Philadelphia.

In Dr. Benjamin Church, Spy: A Case of Espionage on the Eve of the American Revolution, noted authority John A. Nagy has scoured original documents to establish the best case against Church, identifying previously unacknowledged correspondence and reports as containing references to the doctor and his activities, and noting an incriminating letter in the possession of the Library of Congress that is a coded communication composed by Church to his British contact. Nagy shows that at the cusp of the revolution, when the possibility—let alone the outcome—of an American colonial rebellion was far from assured, Church sought to align himself with the side he thought would emerge victorious—the British crown—and thus line his pockets with money that he desperately needed. A fascinating investigation into a centuries-old intrigue, this well-researched volume is an important contribution to American Revolution scholarship.