: Danny "Danno" Williams deals with the possibility of losing custody of his daughter, Grace, when his ex-wife plans to move to Las Vegas. Cast & Guest Stars
: A tragic conclusion that reveals the shocking truth about McGarrett’s mother and forces Chin Ho into an impossible life-or-death choice. Season 2 - Hawaii Five-O Wiki | Fandom
: Officer Kono Kalakaua faces an Internal Affairs investigation and is temporarily stripped of her badge, leading her to go undercover within a corrupt circle of former cops.
: A trap in North Korea that forces a mission to rescue Steve from Wo Fat.
: Feature appearances by Ed Asner (returning to his role from the original series), James Caan (Scott Caan's real-life father), and a crossover event with NCIS: Los Angeles stars LL Cool J and Chris O’Donnell . Major Episodes
joins the task force temporarily as Homeland Security Agent Lori Weston . Terry O'Quinn recurs as Joe White , Steve’s former mentor.
: The NCIS: Los Angeles crossover involving a deadly smallpox threat.