Ben leaps into Alexandra Tomkinson, a medical resident in a Seattle hospital. As victims from a train crash pour into the ER, Addison reveals Ben’s complicated mission, he must go up against hospital bosses to save lives and Alexandra’s career.

Stone and the State's Attorney team investigates the chain of events following the arrest and death of a young man, ultimately seeking charges against Police, Fire Department and Medical personnel, only to have a recalcitrant Grand Jury indict a single individual: Officer Kevin Atwater. Paul Robinette defends Atwater.

When a Muslim grad student is brutally murdered, Stone and the team arrest his friend, another Muslim student, who claims he committed murder to prevent a terrorist attack. The jury must decide whether he's a killer or a hero.

NCIS agents from Washington, D.C., Los Angeles and Hawai’i, all in D.C. to attend the retirement party of a beloved Federal Law Enforcement Training Center (FLETC) professor, find themselves jointly investigating his shocking suicide. The crossover continues on NCIS: Hawai'i S02E10 Deep Fake (II) and NCIS: Los Angeles S14E10 A Long Time Coming (III).

Tennant, Jimmy Palmer and Sam Hanna find themselves captured with a woman who claims to be a CIA agent demanding intel from the team. Also, Jesse, Ernie, Whistler and Alden Parker learn about an asset that arrived in Hawai’i who could be connected to several overseas assassinations. The crossover starts on NCIS S20E10 Too Many Cooks (I). It continues on NCIS: Los Angeles S14E10 A Long Time Coming (III).