Agatha Raisin's private detective agency is working flat out on a series of burglaries which take a violent turn when a friend of Agatha's is murdered during a raid on his antiques shop. Although determined to nail the villains, Agatha still makes time to help Sir Charles Fraith prepare to stage a massive, hugely glamorous event in the grounds of his ancestral home, Barfield House.

When Agatha begins to receive death threats and narrowly avoids being abducted by kidnappers, she takes advantage of a previously arranged trip to Majorca to lie low for a while. There she meets her partner, former police officer John Glass, who is now working as a dance instructor on a cruise liner. Their relationship founders over John's apparent closeness to his stage dance partner, Louise.

Putting her love life on hold, Agatha heads home, having worked out who has been threatening her life. Can Agatha track down the would-be killer, nail her friend's murderers and rescue her romance with John? Everything comes to a climax at the Barfield Extravaganza when on top of everything else, Agatha also manages to solve a 400-year-old Cotswold murder mystery!