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 Memory Prime by Judith Reeves-Stevens & Garfield Reeves-Stevens
Memory Prime is the central core of an immense computer library, an entire network of research planetoids. Here, the Pathfinders, the only artificial intelligences legally permitted to serve the Federation, control and sift the overwhelming dataflow from thousands and thousands of research vessels across the galaxy.

The greatest scientists in the Federation have gathered at Memory Prime for the prestigious Nobel and Z-Magnees prize ceremonies, unaware that a deadly assassin is stalking one of them. As Captain Kirk struggles to save his ship from sabotage and his first officer from accusations of murder, he discovers the hidden assassin is far from the deadliest secret lurking on Memory Prime.