Randall N. Bills & Loren Coleman 
Star Trek: The Demon Book 1 [EPUB ebook] 

STARFLEET CORPS OF ENGINEERS What begins as a simple investigation of a peculiar subspace signal leads to an errand of mercy, as the da Vinci responds to a distress call – from the edge of a black hole! Hundreds of years ago, the Resaurians placed a station near the event horizon, forever teetering on the edge of the abyss, and now the S.C.E. must find a way to rescue them. But the black hole, known as "the Demon, " contains centuries-old secrets that the Resaurians will kill to protect – and both the U.S.S. da Vinci and the station may be sacrificed to the Demon in order to preserve those secrets! THE DEMON Book 1 of 2