First Fleet #1-4

More about the book

"On the front lines of a war light years from Earth, where technology enables the continuous regeneration of soldiers, something unimaginably evil is brought back to life. When a military space fleet accidentally revives an ancient alien race, they send out a single terrifying transmission for help before disappearing without a trace. Now, a young scientist must race to find the fleet and save her only sister from an unknown fate."-- From the back cover