Once again the eccentric feisty octogenarian, Auntie Haines, finds herself entangled in a deadly situation.

The annual international tennis tournament played at a posh Scottsdale resort has enabled Auntie Haines'' four rental bed and breakfast rooms to be filled for two weeks. Juan Castillo, a Cuban exile who has become a seventeen year old tennis sensation will be renting one of those four rooms. Unfortunately Juan is unaware that his Cuban ethnicity has made him more than just a tennis star; it has set in motion the plans for a deadly terrorist attack.

Although Detective Keith Haines is vehemently opposed to any offers of help from his adopted mother, Auntie Haines finds herself, her daughter Sara, and a sweet little mutt named No Name dangerously involved in an evil plot of terrorism against the United States. Can they prevent the death of many innocent tennis enthusiasts? What causes Auntie Haines to suspect that her renters might be sinister enough to be mixed up in such a horrendous undertaking?

The stage is set, the conspirators are ready, and the lives of hundreds of spectators attending the final tennis match at the Scottsdale Oasis Resort are in mortal jeopardy.