Who betrayed Upton?
On Chicago PD Season 10 Episode 20, she was drawn into a deadly betrayal and left fighting for her life.
Meanwhile, Voight and the team scrambled to find her before it was too late.
As they tried to look to the past, a shocking tip could be their saving grace.
How did it all play out?
Use the video above to watch Chicago PD online right here via TV Fanatic.
Catch up on all your favorite shows and reviews and join in the conversations with other fanatics who love TV as much as you.
TV Fanatic is your destination for the latest news, spoilers, reviews, and so much more!
Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.