CNA Sally Cox is about as happy to be at Walnut Hills Nursing Center as the patients are. But it's work or starve, now that her husband has found a younger companion. Sally's new crowd skews toward the elderly - ninety-year-old Elsie Rigsby, for instance, whose dementia comes and goes with her gold-digging son and grandson's visits. Elsie's not going to tell those vultures where she stashed her money. Still, she's not getting any younger, and someone besides her needs to know. Three deaths later, is anyone watching Sally?