Secondhand shop owner Sarah Grayson's evening out comes to an abrupt end when she discovers Stella Hall, a member of the library board, standing over a body in the street. Although Stella admits that she and the victim had fought, she is adamant that she is innocent and the real killer is on the loose. Sarah is eager to help, but even with the assistance of the senior citizen detectives who rent out part of her shop, there is still a vast amount of circumstantial evidence linking Stella to the crime. The odds may be stacked against them, but Sarah, her cat Elvis, and friends will work hard to and catch a killer.