Krista Starr returns home from Iraq, and it's not long before she finds out her twin brother Zack, has been killed. She hunts for the man that killed her brother. Blade is also hunting for the same man, which Krista and Blade team up to take down, but things don't turn out so good for Krista.

Krista hunts down Boone through their spirit connection, while Marcus sends Chase to Berlin to track down one of Dr. Vonner's pregnant patients - a woman whose child-to-be harbors a dark secret. Blade follows Chase to get the woman first, while Marcus reveals the secret of Aurora to Krista.