Tangle in the Dark
Their mission compromised by a crewman's hack, the Angel seedship Gordon's Lamp descends back into the Sol system to find their home ravished by war, specifically a doomsday device in deep space. While being diverted to find that device, an enemy ship approaches, an enemy agent boards and their System's Administrator disappear. Was it because of the discoveries they were making the dark matter, or was it a new hack? And was their hacker the only one who could get their Systems Administrator back?