Evolution

Grief over Janeways impending death, coupled with anxiety brought on by the disappearance of Tom, Harry and the Doctor, is put aside as Chakotay assumes command... » 

Grief over Janeways impending death, coupled with anxiety brought on by the disappearance of Tom, Harry and the Doctor, is put aside as Chakotay assumes command of Voyager, and the crew prepares for attack by the enraged Nacene. The third in the String Theory trilogy, this book brings Voyager's cosmic odyssey to a climax. «