Did Red manage to survive being poisoned?
That was addressed on The Blacklist Season 4 Episode 15.
He turned to some shocking measures when he retraced his steps to find out the truth.
Meanwhile, Liz and the team went on a daring mission to find the person responsible.
However, they did not bank on this person being so close to Red.
What did they do to save him?
Use the video above to watch The Blacklist online to get caught up with the latest drama for the characters on this hit series.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.