ION Mystery The team investigates a suspicious death and the missing key piece of evidence is a top secret, high-tech battery; Pride and the team realize there could be deadly consequences if it falls into the wrong hands. 2026-09-01 When a torpedo hits a fishing trawler at sea, the entire Gulf Coast is in jeopardy as Pride and NCIS race to find the submarine before it can strike again. 2026-09-01 A Navy therapist who is working to get justice for victims of sexual assault is murdered; Carter's mother confronts him when he refuses to talk to the FBI for a background check on her behalf. 2026-09-01 As Pride and the team continue the investigation of an officer's assault and the murder of her therapist, NCIS zeroes in on a suspect who's been working the system for years; Carter and his mother talk about how they'll move forward after a mistake. 2026-09-01 Pride and the team are on the hunt for a kidnapped 14-year-old and discover that her father, who will soon have custody of her, is a radical survivalist living off the grid. 2026-09-01 When a petty officer is shot down by a sniper, Pride and NCIS hunt down the killer, only to find that he may not be acting alone; Rita tells Pride that she has been offered a compelling job. 2026-09-01 On Christmas Eve, Walter becomes unconscious after falling down the stairs and enters a dream world where Team Scorpion never existed. 2026-09-01 The team must work with Toby's nemesis and his wife -- Toby's ex-fiancée -- when they are locked inside an artificially intelligent doomsday bunker that aims to kill them; Walter is distracted by a dream in which he married Florence instead of Paige. 2026-09-01 Power is knocked out in Los Angeles, and the team must help a teen pilot and his girlfriend who are lost over the Pacific without any radio contact; Walter must look after a group of Ralph's classmates; Cabe tries to tell Allie that he loves her. 2026-09-01 Team Scorpion must prevent an incoming tsunami from hitting a vulnerable nuclear power facility; Toby secretly helps his ex-fiancee retrieve her stolen identity. 2026-09-01 McGarrett and the team work with an injured police dog that is the only witness to an ambushed drug bust; a former SEAL looks to join the task force. 2026-09-01 The team enlists an old friend when a crime boss is murdered, triggering revenge killings across the island; McGarrett and Danny work out details concerning their new restaurant venture. 2026-09-01 When the HPD system is hacked and one of the Five-0's informants ends up dead, McGarrett enlists the help of hacker Aaron Wright, whom he just imprisoned. 2026-09-01 At Halloween, the team investigates a string of murders that mirrors stories from well-known Hawaiian folklore; Grover visits a man who is hours away from execution and may hold the key to a case that has plagued Grover for years. 2026-09-01 The murder of two tourists leads the team to a man who has multiple personality disorder; Danny and the others hire a stress management consultant to help McGarrett. 2026-09-01 A bank heist in progress forces Steve to make a potentially heartbreaking mistake; Adam faces an empty home without Kono. 2026-09-01 McGarrett poses as a pilot to investigate a plane crash that led to the death of a pilot in an air race. 2026-09-01 McGarrett, Danny, Tani, and Junior are exposed to a deadly biological weapon; the rest of the team has eight hours to find an antidote. 2026-09-01 Danny is shot while quarantined in the hospital; unconscious, he clings to life and imagines a future for everyone. 2026-09-01 Danny tells Charlie a bedtime story about a case involving bad Santas and a holiday miracle. 2026-09-01 When an FBI agent who was cracking down on organized crime is killed, McGarrett rounds up every gang-related criminal on the island to find the culprit responsible for the murder. 2026-09-01 Grover must prevent a man who is accused of killing his wife from committing suicide. 2026-09-01 The corpse of a diamond smuggler is stolen from a graveyard; Five-0 tracks down his partner, who is determined to retrieve their latest batch of contraband; Adam recruits a new, confidential informant; Tani gets a devastating call. 2026-09-01 McGarrett and Danny investigate the murder of a private detective whose client was killed the same way; Adam sends Jessie into a dangerous situation with disastrous consequences; Danny's uncle comes to town to help with the restaurant. 2026-09-01