Those conflicting demands intersect during a mission to retrieve one of his world's most sacred artifacts, a relic of Vulcan's ancient past -- the search for which will reveal dark and deadly secrets, forever altering the course of Spock's life and defining the man he became.

A classic tale from D. C. Fontana, one of Star Trek®'s original producers and the writer of such classic episodes as 'Journey to Babel' and 'This Side of Paradise.