As the men and women of Crozet, Virginia, prepare for a local Civil War reenactment, popular Tommy Van Allen is reported missing. No one's seen his single-engine plane, either - no one but Mrs. Murphy, who spotted it during a foggy evening's mousing in Tally Urquhart's abandoned barn. Mrs. Murphy is certain that something sinister did occur that night on the Urquharts' deserted airstrip.

But how can Mrs. Murphy prove it when everyone in town is preoccupied with the debate over the region's new reservoir - and the money and power that are at stake. Even Mrs. M's favorite human, postmistress Mary Minor "Harry" Haristeen, bored by politics, can sense the dangerous anger brewing in some of Crozet's most prominent citizens.

Local tensions are set aside for the day when the gang - including Mrs. Murphy, Pewter, and Tucker the corgi - assembles for the reenactment of battle of the Oak Ridge. But when the smoke finally clears, someone is lying on the ground with three very real bullets in his back. While the clever tiger cat and her friends sift through clues that just don't fit together, more than a few locals fear that the ensuing scandal will force well-hidden secrets into the harsh light of day.