The team races to uncover the group behind an assassination attempt targeting UN diplomat. Whelan and Reyes discover a vital piece of evidence in underground tunnels. Stabler tries to balance the case while tending to his ailing mother.
The team scrambles to find the group responsible for an assassination attempt on a UN diplomat. Whelan and Reyes find a key clue in the depths of the city's tunnel system. Stabler struggles to balance the investigation with his mother's increasing need for support.