Captain's Blood

The Romulan Empire is in disarray after the destructive leadership of the Reman Shinzon, and Ambassador Spock launches a bold attempt to reunify the Romulans with their distant forbears, the Vulcans. But when Spock is publicly assassinated at a Romulan peace rally, Starfleet and the Federation are unable to search for the criminals responsible without triggering an intergalactic war.

Thus it falls...