Nancy and Glenn get caught in the crossfire as a sniper takes San Francisco hostage. Rabbit and Marisa are torn between instinct and protocol as each emergency medical call could be a trap. Meanwhile, Boone must learn to adapt to Tyler's new paramedic status and medical knowledge.
Elenco: Cliff Curtis , Anastasia Griffith , Taylor Kinney , Aimee Garcia , Derek Luke , Jamey Sheridan , Kevin Rankin .