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 out...