If Ever I Return, Pretty Peggy-O — Sharyn McCrumb

Sheriff Spencer Arrowood keeps the peace in his small Tennessee town most of the time. Every once in a while, though, something goes wrong.

When 1960s folksinger Peggy Muryan moves to town seeking solitude and a career comeback, her idyll is shattered when she receives a postcard with a message that scares her enough to call the sheriff. When a local girl who looks like Peggy vanishes without a trace, Spencer is sure there's a connection.

Although she was once famous, Peggy has no fondness for the old times. Those days are best left forgotten for Spencer, too. But sometimes the past can't rest, and those who try to forget it are doomed to relive it....