Season 3 Episode 27: Ascension

"After tragedy strikes yet again, Sarah is left devastated - and angry. While she embarks on a one-woman crusade to bring to justice all who have wronged her, the team must act quickly to save her from becoming the evil, twisted version of her future. But to stop her from her own destiny, they are going to have to protect the one man they all despise most in the world. A reckoning is coming..."