Mirror Lake (A Shady Hollow Mystery #3) by Juneau Black
From Vintage Crime/Black Lizard:
The third novel in the Shady Hollow mystery series, in which Vera Vixen takes on her most challenging case yet: solving the murder of a rat who appears to still be alive.
Change is afoot in Shady Hollow, with an unusually tense election shaping up between long-serving Chief of Police Theodore Meade and Vera’s beau, Deputy Orville Braun. But the political tension takes a back seat when resident eccentric Dorothy Springfield becomes convinced her beloved husband, Edward, is dead, and that the rat claiming to be him is actually a fraud.
While most of the town dismisses Dorothy’s rants as nothing more than a delusion, Vera has her doubts. More than a few things don’t add up in the Springfield household, but Vera will have to tread carefully, since, with Orville’s attention on the election, she may be more exposed than ever.
A VINTAGE CRIME/BLACK LIZARD ORIGINAL.