Did the team manage to find the man responsible for the fire?
That was addressed on Chicago PD Season 4 Episode 16 when the team continued their investigation into the huge fire.
However, they quickly realized they were caught up in a deadly game of cat and mouse.
Meanwhile, Olinsky's daughter remained in a critical condition, making the group worry she was not going to pull through.
Did she wake up?
Use the video above to watch Chicago PD online to get caught up on the latest developments for the characters.
Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.