There are 3 books in the The Chronicles of Sarco series. The newest book is Through Chaos which came out in 2018.

1
Edge of Oblivion

Book cover of Edge of Oblivion
A Forgotten Past. A Terminal Future.
Earth has emerged from a cataclysmic dark age with little knowledge of its past. Aided by the discovery of advanced alien technology, humanity ventures into the stars, joining other sentient races in a sprawling, prosperous interstellar Confederacy.

That peace is soon shattered. Without warning,…
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2
Into The Void

Book cover of Into The Void
A new ship. A perilous journey.
  
Humanity and its allies have survived the terror of the planet-ship known as Malum. The Confederacy, badly beaten but not destroyed, is slowly rebuilding from its brush with oblivion.  
  
Now Navy officer Jared Carter has a new task: to track Malum's path back across…

3
Through Chaos

Book cover of Through Chaos
A singular evil. An unlikely salvation.

Captain Jared Carter and the Navy cruiser Hattan have helped liberate an alien race from the clutches of darkness, but at a terrible cost of lives and ships. While regrouping, they receive word that a shocking fate has befallen the Confederacy during the Hattan's…