Barbara Gold is an agent with the CIA.
Former agent, that is. Retired.
This is the very short description she is kind enough to give us immediately upon our meeting her in the first recorded adventure: "I'm Barbara Gold. Age: 70. Height: 5'5". Eyes: blue. Hair: gray. Weight: none of your business. Specialties: Undercover surveillance, small arms, chemical weapons, Middle Eastern and Latin American politics. Current status: Retired widow and grandmother."
She is giving us this data as she sits in weekly meeting of the Cheerville Active Readers' Society, "the closest thing to pass for entertainment in this sleepy little New England town". She by no means hates the community of Cheerville but she would never have retired there if she had had a choice; her annoyance stems not from the location, mind you, but from the fact that retirement had been "forced down my throat by the government three years before".
One of the problems with the utter boredom Gold is finding herself dealing with is that she now worries about losing her edge and "getting soft". As an operative with the Agency, "nothing ever went unnoticed by me". Now with usually nothing going on at all, she was finding it more difficult than ever to pay attention. That is because there seems to be nothing ever going on in the town - her reason for moving there was because her grown son and his wife and teenaged son lived there. Since the passing of her beloved husband, James, a fellow agent himself back in the day, that was the only family she had so being close to them her largest desire.
Well, that and a bit more action. Weekly visits to the shooting range just outside the town borders was good for making sure her expertise with various firearms (and for giving the much younger male clientele a good chuckle - until they saw the bullseyes being obliterated). Regular exercise helped keep the muscles in fine working shape (as fine as they could be expected to be at seven decades). But it was the excitement she missed and the danger!
Which is possibly why when she knew she was nearing the end of her patience and having to sit in yet another tedious Reader's Society meeting and then one of the members dropped dead from obvious poisoning, well, here was a challenge - a puzzle to solve and a killer to catch and best of all, danger!