Star Trek: The Original Series: Crucible: McCoy: Provenance of Shadows

David R. George''s Crucible Trilogy explores the legacy of one pivotal, crucial moment in the lives of the men at the heart of Star Trek -- what led them to it, and to each other, and how their destinies were intertwined.

For Doctor Leonard McCoy, life takes two paradoxically divergent paths. In one, displaced in time, he saves a woman from dying in a traffice accident, and in doing so alters Ea...