Stephanie St. James—manners columnist Miss Prim & Proper —swears she's done with drama. After all, she's left entanglements with the Russian mob and human traffickers behind her. Now she's happily settled in Sinful, Louisiana, ready for sweet tea, small-town charm, and romance with her FBI agent boyfriend, Kase Mayeux.

When Celia ropes her into helping with Sinful's very first carnival, Stephanie figures it's the perfect chance to prove she can enjoy a community event without chaos. Easy, right?

Wrong. The psychic booth is being run by none other than Madame Zora—Stephanie's secret fortune teller from Boston—and the moment she arrives, the trouble starts rolling in. A mysterious tarot card turns up at the scene of a theft, Madame Zora vanishes, and a grudge-holding real estate developer starts sniffing around.

Now, with the Swamp Team at her side, Stephanie is determined to solve the mystery before the carnival closes. But in Sinful, "peace and quiet" is about as rare as a settled spirit—and sometimes even a proper lady has to get her hands dirty.