A flamboyant fiancé, a "Mob Killer" Roman candle, a yappy rescue dog, and a bison bull named Tarzan.

A recipe for chaos and calamity for Marcia's introverted friend, Jess Randall.

When not serving up her to-die-for eggs and biscuits at the Mayfair Diner, Jess just wants to live quietly on their farm. But her fiancé Dan has impulsively offered to host the Mayfair Independence Day Extravaganza.

The day of the big bash, Marcia and her dog Buddy witness a public fight between the couple, and just hours later, Dan is found with a Roman candle through his chest. Was it an accident, or was it murder? And is Jess a killer, as the sheriff's department believes?

Between dog-training sessions, Marcia feels compelled to investigate, especially when there are signs that the real killer may not be finished... Could Jess be the next target?