The Letters: an Abigail Stone Mystery

When Abigail Stone visited the local historical museum she wandered into an area being renovated for a new permanent exhibit. The volunteer working there told her that the brick wall she was examining had once been the outer wall of the museum. It had been covered when an addition to the museum was added in 1948.
While talking to the volunteer about the exhibit that would eventually be housed in this large area, Abigail noticed an irregularity in the brick work of the recently uncovered outer wall. Upon closer examination, she found a loose brick and, behind it, a note.
Some time later a couple who were renovating their very old house found a packet of letters tied together wedged behind a rafter in the attic. Because the top few letters appeared to be written by the librarian nearly a hundred years before, they brought the letters to the museum. The note Abigail found had been written by the same person. She did some research to discover who the writer was and to whom he was writing. She uncovered both a love story and an unsolved 100-year old crime.