Frank must race to stop a biological weapon attack on New York City, while keeping it a secret from his family during their most sentimental holiday, Mother’s Day. Meanwhile, a…

Danny is put in a difficult position when a gun linked to a robbery is brought in to the NYPD’s gun buyback program. He must decide to either arrest the…

Danny causes waves in the department when he investigates a closed case, the suicide of a firefighter, at the insistence of the man’s 12-year-old son. Meanwhile, Jamie saves a baby…

Danny and Jackie are assigned to protect a key witness in a Russian mob trial, but when an attempt is made on her life, they realize there is a leak…

Danny and Jackie investigate the suspicious murder of a high rolling investor, who had injuries from a fight, but no marks on his hands. Meanwhile, Frank puts Jamie under house…

When a man’s family is robbed and beaten in front of him, and the assailant is shot and killed, the Reagan’s debate about how far they would go to protect…

Danny and Jackie investigate the murder of a Reagan family friend who was an undercover detective. Danny’s family starts to worry as the persistent search takes an emotional toll on…

When Frank’s close friend, a high-profile reporter, is almost assaulted while in town investigating a story, Danny and Jackie attempt to track down her would-be attacker. Meanwhile, Jamie’s undercover case…

As Erin prosecutes a woman accused of killing her husband, the defendant’s attorney is murdered and Danny is assigned to the investigation. When Danny is put on the stand to…

Danny and Jackie investigate a murder scene at a diner, where a witness claims a uniformed officer fled the scene after shots were fired.

On the way home with his family, Danny hits a man with his car who is fleeing from a gunman, and his family gets caught in the crossfire when Danny…

When a rich woman dies of a heart attack, her eccentric daughter claims that she received a message from God, who told her that her stepfather actually murdered her. Meanwhile,…

When Erin’s informant is murdered, she blames herself and works to help Danny discover who killed him.

A woman recants a domestic-abuse claim, but Danny and Jackie continue to investigate the situation. Soon they uncover the woman’s secret affair with a powerful politician who’s friends with Frank….

Danny believes a serial killer is on the loose when two separate murder victims are identified as members of a group charged with a gang rape. Meanwhile, Erin’s ex-husband, attorney…

Danny and Jackie set out to investigate the murder of a bride on her wedding day in a drive-by gang shooting. However, they are pulled off the case and assigned…

Shortly after Frank awards a detective with the Medal of Valor for his undercover work for the NYPD in Malaysia, the detective is taken hostage by a Malaysian drug lord…

When Erin’s key witness, an infamous photographer, is nearly killed in a hit and run, she arranges for Danny to work protection detail to safeguard him. Meanwhile, Jamie and Vinny…

When a knife-wielding attacker dressed as Baron Samedi, the Spirit of Death, stabs a man in costume on Halloween, Danny enters the world of voodoo. Meanwhile, DCPI Garrett opens up…

Danny arrives at a college campus to find a murdered student, who was thought to be dealing drugs. Meanwhile, Jamie has a life crisis when he reconnects with a former…

When Danny and Kate come up empty-handed with leads for a shooting, Linda helps make a break in the case when she overhears the victim telling his priest who is…

A dangerous criminal from Danny’s past comes back to seek revenge and kidnaps Jackie. Meanwhile, Jamie meets his new partner, while a young officer is shaken after he accidentally shoots…

A murder case hits close to home for Max when he is convinced that The Trashman, a serial killer with ties to his past, is on the loose. In order…

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….

Just as McGarrett finally gets his hands on his arch nemesis Wo Fat in a special ops raid, he’s blindsided when he finds that the Japanese Yakuza is hot on…

Five-0 is in hot pursuit of a shooter who guns down one of their own, while another team member is forced to choose which of their kidnapped loved ones will…

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 McGarrett’s sister is arrested for smuggling diamonds, he enlists the help of an ex-con to set up a sting.

When the Five-0 team discover that the murder of a High School girl was a professional hit, they must find out why she was targeted before they can find her…

Chin Ho shares news about Joe White that rocks McGarrett to his core; Danny is forced to play midwife when his ex goes into early labor.

When Danno and his family are targeted by a vengeful dirty cop from Danno’s past, the team steps in to help.

When the team almost causes an international incident, Lt. Gov. Denning decides that one of them should be fired; Chin Ho faces the harrowing task of choosing a Valentine’s Day…

Five-0 investigates the murder of a man dressed as a Hawaiian NaKoa warrior found in the jungle near the site of a historical war reenactment

An Aloha Girls camping trip with Grace turns deadly when an armed man takes McGarrett and a little girl hostage. Meanwhile, Adam introduces Kono to his dangerous brother who was…

After a carjack attempt on Steve and Catherine, they meet a boy whose father is missing and could be a grave danger.

The team goes after Wo Fat and Delano for the death of an important person. Steve must resolve the issues between him and his “dead” mother, once he finds her…

Steve goes to Cat for help finding his mother. When an art heist turns deadly, Five-0 turns to August March.

Steve and Danny take some time off to enjoy a little fishing only to find themselves stranded and facing pirates.

The death of a polo player who literally loses his head is investigated. Meanwhile, McGarrett’s mother pays him an unexpected visit.

A grisly murder leads Five-0 to discover a ritualistic killing on Halloween, and the evidence suggests that the murderer will soon strike again.