Death on Covert Circle (#4, Secret Sleuth)
When Sheila and Clara stop by the local chain grocery store on a mundane errand, they discover the chain’s unpopular CEO is there for a surprise visit. Grocery shopping soon becomes anything but mundane when the CEO is murdered.
No matter what ex-cop Teague says, how could they possibly resist investigating when they’re right in the middle of it? They sort through disgruntled customers, unhappy employees, a local rival, and the CEO’s successor, with long-distant help from Great Aunt Kit, then an unexpected assist from Gracie the collie and her best dog buddy, LuLu.