Samhain Crossing

They recognize each other across twenty centuries.

On the ancient Celtic feast day of Imbolc, a mysterious, but empty, box is discovered, built into a wall of a first century structure in the ruins of Carn Euny in Britain. Itching for distraction, the dig team drop a note into the box, and the next morning find an answer written in ancient Latin.

Dig director, Doctor Daria Caitini, declares the response a hoax, but when more and more letters arrive on each successive Celtic feast day, Dari...