A man accused of murder holds Patrick Jane and others at gunpoint in an effort to clear his name. Now, Jane must think quickly to defuse the hostage situation.
The NCIS team investigates when a Marine is attacked in his home and his daughter is kidnapped on Halloween; Abby's Halloween costume leaves McGee and Tony speechless.
Kensi and Deeks search for three Marines who go missing after an ambush; Nate returns from his mysterious assignment.
The agents investigate the mysterious deaths of Chinese immigrants whose bodies were missing various internal organs.
While rescuing an injured firefighter, Rox is hit by a drunken driver; Willis begins to realize his feelings for Rox; Leanne is excited to tell Ariel good news about her adoption.