Symbiont

When Apoehl, the last of a race of benevolent and powerful aliens, comes to Earth to escape the war mongering Chilk, he is forced to abandon his failing body. To survive he must merge his life force with a human.
Jennifer has become the latest in a long line of hosts. Now she finds herself endowed with inhuman energy, in possession of the memories and strengths of those before her, and caught in a war.
It falls to Sam, the grizzled retired Marine now in command of a covert Government agency, and Paz, Sam's mountain-sized right-hand man, to protect her from Brett, who craves the power for himself and will do whatever it takes to get it.
But as Jennifer fights against her past and questions the person she is becoming, the greatest struggle could be with herself.
Together, Jennifer, Sam, Paz, and Brett will unfold and build the story of the conflict that will change them all and decide Apoehl's fate.