The entire operation may be in jeopardy when Mahone gets into trouble with the law. Gretchen’s sister receives a surprise visitor. The Company may be onto Self. T-Bag continues to…

Michael and a wounded Lincoln try to outmaneuver Mahone, who is hot on their trail. Sara gets a surprise visit to her bedside.Following his suspension, Bellick recruits a resolute partner…

On Halloween, Magnum and Jin search for a skip-tracer at a Halloween bash, just as Katsumoto tracks an escaped killer who is headed to that same party. Also, Higgins and…

While Magnum waits for Higgins to decide if she’ll officially become his partner, he takes the case of a missing wife who witnessed her boss’ murder during a bank robbery….

Magnum and Higgins are shocked when one of her former MI6 teammates shows up with a fresh gunshot wound and news that “the Viper,” the assassin who killed Higgins’ true…

As Taylor searches for the “Sixer” mole within Terra Nova, Jim stumbles onto an old murder, for which Taylor is the prime suspect.

Maddy starts interning for the colony’s greatest scientist, and her life is put in danger when she discovers a terrible secret. Meanwhile, Josh makes a deal with the devil in…

When Ilsa’s friend is held hostage, Chance must turn to the only person he knows has information to help rescue her: his archenemy Baptiste, who is currently banished to a…

Chance reunites with a fiery former flame when he is called to South America to rescue an archeologist whose discovery of a lost treasure makes him the target of a…

McGarrett and Danny investigate the murder of a private detective whose client was killed the same way, and Adam sends Jessie into a dangerous situation with disastrous consequences. Also, Danny’s…

Junior and Adam back up McGarrett when a bank heist in progress forces Steve to make a potentially heartbreaking mistake. Also, Adam is forced to face an empty home without…

McGarrett and Danny recruit Tani Rey to join the task force when diabolical hacker Aaron Wright releases a dangerous arsonist from prison.

McGarrett risks his life when Five-0 attempts their most dangerous rescue yet of young girls trapped in the sex trafficking ring they have been tracking this year. Also, Kono, deeply…

While working the murder case of one of the last survivors of the USS Arizona, McGarrett learns about his grandfather’s important role at Pearl Harbor. Also, Adam uncovers bone fragments…

When the bodies of two serial killers are found on Five-0 property with chess pieces in their mouths, McGarrett and the team hunt for a vigilante as fear grows that…

A murder leads Five-0 to investigate a centuries-old Oahu palace raid involving pirates, buried treasure and a killer who is using a stolen painting as a map. Also, the morning…

On the eve of Kono’s wedding to Adam, Five-0 must stop a fanatical patriot intent on starting a new war on terror by detonating stolen nuclear warheads and framing a…

On the fourth anniversary of his father’s death, McGarrett meets a woman who helps him reopen the last unsolved case his dad worked on before he died.

The island of O’ahu goes on lockdown when Five-0 hunts a terrorist who starts using weaponized drones on civilians. Meanwhile, McGarrett and Danno must go for a mandated review with…

When Grover’s daughter is kidnapped by an old nemesis, he is forced to help steal $100 million in order to get her back. Meanwhile, Wo Fat escapes prison and heads…

A man is shot as his daughter is abducted; Danny tries to reunite his parents; Jerry finds a code on McGarrett’s champ box.

An investigation involving a potential serial killer puts Chin’s life in danger; Grace and Danny find a mysterious puzzle box.

Five-0 and the NCIS: Los Angeles task force team up in Hawaii when there’s a suspect on the loose who is threatening to release a deadly virus into the population….

Five-0 crosses paths with Tony Archer, a retired NYPD bomb expert who is now a private investigator on Oahu, when they investigate the death of famous talk radio DJ Bobby…

When the Five-0 discover a John Doe in the trunk of a stolen car, they not only have to find a killer, but also need to figure out who the…

A dejected Sidney enlists the aid of Emma to help uncover evidence that could expose Mayor Regina as the corrupt person she really is to the townspeople of Storybrooke. Mary…

Russian ire worries the White House, while the Chinese take on CTU, and the damaged circuit board is in surprising hands.

Russia presses the White House, while Jack must try to thwart the Chinese and his oldest antagonist simultaneously.

The Chinese want Jack to give them Russian nuclear technology, and the President wants the Vice President’s resignation.

To find the remaining suitcase bombs, both Jack and the President set up bluffs.

Chloe is unexpectedly thrust into fieldwork when a woman reports that her boyfriend may be part of the terrorist conspiracy. Jack and Curtis find their latest efforts to trap Marwan…

After Logan authorizes Palmer to take charge of the crisis, Palmer sanctions Jack and Curtis to infiltrate the Chinese Embassy on a covert operation to capture a suspect. Tony and…

CTU raids Marwan’s hideout, but he manages to slip through their fingers. Luckily, Jack locates a lead that may help him identify Marwan’s next target. Tony becomes suspicious of Michelle’s…

Marwan decides to trade Jack for Behrooz in hopes of distracting CTU from his real objective. Tony and Michelle weigh the consequences of the trade, while Curtis reluctantly interrogates Behrooz…

Jack and Chase interrogate Nina, but the worm turns when she causes havoc with the CTU computer systems. Chappelle puts Chloe under guard when she refuses to answer questions about…

Tony interrogates Nina about Alvers’ location, while Chappelle orders Jack to undergo a medical examination in light of his drug use. Kim and Chase have a conversation about the baby….

Jack meets up with Teri at the hospital where they wait to talk to Janet about Kim. However, Janet is killed by Alan who is really working for Ira Gaines….