British pigeoneer Olive Bright is proud of the role her racing birds have played in the war effort and has hopes of becoming an agent herself . . . but first there is a baffling murder to solve.

As the weather turns bitterly cold in the dark days of November 1941, fewer pigeons are being conscripted for missions into occupied Europe and Olive fears her covert program may be dropped altogether. In fact, the new CO of the Baker Street intelligence operation at Brickendonbury Manor, Major Blighty, has expressed his doubts regarding her birds—not to mention Olive herself—and assigned her to a far more insignificant role: escort to a visiting officer of the Royal Navy Intelligence Special Branch.

She's none too keen on her assignment or her charge—the aloof and arrogant Lieutenant Commander Ian Fleming—but the last place she expects to accompany him is to a seance. Self-proclaimed medium Velda Dunbar—new to the village of Pipley—has drawn fascination and skepticism after a very public channeling of a doomed seaman aboard the HMS Bartholomew, which she claims has sunk. Fleming remains tight-lipped about his reason for attending her seance, but his arrival with Olive raises eyebrows as she is still maintaining the ruse of dating Captain Jameson Aldridge. When murder occurs before her very eyes, Olive must trust her own instincts and not rule out anyone as a suspect—including the secretive Fleming—for one of them is harbouring a hidden deadly agenda.