Book — J S Dewes

The Divide.
It's the edge of the universe.
Now it's collapsing--and taking everyone and everything with it.
The only ones who can stop it are the Sentinels--the recruits, exiles, and court-martialed dregs of the military.
At the Divide, Adequin Rake commands the Argus. She has no resources, no comms--nothing, except for the soldiers that no one wanted. Her ace in the hole could be Cavalon Mercer--genius and exiled prince who nuked his grandfather's genetic facility for "reasons."
She knows they're humanity's last chance.