Hit Mom Grace Adair returns to court to help her lawyer husband Michael defend Sherri Romano, the widow and accused killer of Nicky the Used Car Czar.

When Michael introduces Grace to their new client, Sherri, and her purse dog, Precious, Grace is less than thrilled to be working with a "Karen at volume eleven." But that bad feeling immediately gets worse when Grace recognizes the name of Sherri’s first husband…because Grace killed him.

In Hound of the Bonnevilles, Grace must now defend an alleged black widow in the midst of the busy holiday season, dealing with shopping, celebrations, and Scotchie the Giant Dog’s annual war with inflatable snowmen and grinches—not to mention a background check on her handler Madge’s fiancé, who turns out to have a few secrets of his own. With all this holiday madness, will Grace be able to prove Sherri’s innocence, when even she herself has doubts?