Titus Oates, an unknown preacher, creates panic with wild stories of a Catholic uprising against Charles II. The murder of a prominent Protestant magistrate appears to confirm that the Popish Plot is real. Only Nathaniel Thompson, writer and Licenser of the Presses, instinctively doubts Oates’s revelations. Even his young wife, Anne, is not so sure. And neither know that their friend William Smith has personal history with Titus Oates. When Nathaniel takes a public stand, questioning the plot and Oates’s integrity, the consequences threaten them all.