Agatha and James Lacey are still happily together, although not engaged. She has officially started her new detective agency, but she is sitting around waiting for some action. James suggests that they "drum up business" by investigating a "legendary haunted house." This turns into a very spooky mystery for Agatha to solve.

Agatha investigates a death threat to a young woman about to get married– however, the case takes an unexpected turn when the would-be assassin is found dead.

The case grows more complex when a would-be assassin dies in Agatha's kitchen, but who was the target: him or Agatha? Toni continues her search for the missing dog, and Charles and Roy pull an all-nighter in the pub.

Tensions between Agatha and James run high ahead of a smooth jazz night at Barfield Hall. Then a woman James was seen arguing with turns up dead at Agatha's cottage, and James disappears. Working with James's sister, can Agatha find her love and clear his name?

Unbeknownst to Agatha, Charles helps James, who is still on the run from the police. Agatha attends the viewing of the victim's living will, and her list of suspects grows shorter when a charity auction turns deadly.

To take her mind off her breakup with James, Agatha and the gang venture out to the Winter Fayre, where the highlight of the evening is the roast pig on a spit. The event turns into a crime scene, however, when the main course turns out to be a tattooed human torso. Newly promoted Bill is put in charge of the investigation, but he receives strict instructions not to discuss it with Agatha.

After Agatha's life is threatened and a decapitated head is mailed to her home, Bill suggests they all stick together. While Bill investigates missing farm machinery, Agatha worries that Charles is becoming too close to Sarah.