Callie Valentine Jones and her cousin Lovie really have their work cut out for them this time. Callie’s mama Ruby Nell has gone and entered herself—and her hunk-a-geriatric-love dance partner—in a Memphis mambo contest, hoping to shake, rattle and roll her way to stardom. And if the past is any indication, she’ll need at least two chaperones.

But someone at the competition is determined to step on a lot of blue suede shoes. First, a serial monogamist in a bright pink gown does a fatal swan dive from the top of the hotel. Then Callie finds an overdressed diva floating in a famous fountain. Now there can be no question: A murderer is loose in Memphis, and he’s got a lot of killing to do.

With help from Jack, the mysteriously reappearing ex Callie just can’t get over and her delusional dog Elvis, Callie and Lovie are going to have to track down some answers before mayhem strikes again. And with Ruby Nell in the killer’s sights, they’ll need a little less conversation and a lot more action if they want their family waltzing home in one piece…