Star Trek: Invincible Book Two (Star Trek: Starfleet Corps of Engineers 8)

STARFLEET CORPS OF ENGINEERS
Long believed to be just a Nalori myth, the shii has turned out to he devastatingly real! The monster -- seemingly invulnerable, undeniably powerful, and completely rutbless -- as carved a swath through the Nalori construction project on the crystal planet of Sarindar. The project's supervisor, Commander Sonya Gomez, must find a way to stop the deadly creature before It destroys the entire project and its workers.
But when the truth behind the shii is revealed, Gomez realizes that even one of the S.C.E.'s top officers may not be able to solve every problem...
The exciting conclusion to the gripping, all-new two-pail adventure!