Hawaii Five-0

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 tourists aren't safe in Hawaii. Rosalind Chao guest stars as Governor Keiko Mahoe. (TV-14 L, V)

Five-0 must work with rogue MI-6 agent Harry Langford (guest star Chris Vance) to find a terrorist planning to cause nuclear reactors across Europe to meltdown. Also, McGarrett and Danny ask retired FBI profiler Alicia Brown (guest star Claire Forlani) to help them find their serial killer vigilante.

When FBI Profiler Alicia Brown (Claire Forlani) finds a body in her bed, she is forced to join McGarrett in the hunt for the chess-piece killer. Also, Kono reconnects with a former surfing competitor (Kanya Sesser), who is now a disabled and homeless war vet. Elizabeth Röhm also guest stars as a police psychiatrist.

Five-0 must find McGarrett and Alicia when they are kidnapped by the serial killer they've been hunting.

When a cache of guns is stolen from a gun range, Five-0 discovers the culprit is intent on making a dramatic and potentially deadly statement on gun violence. Also, Kono and Adam are finally reunited when he is released from prison.

On Halloween, Five-0 investigates the murder of a medium with a checkered past who was apparently scared to death by a poltergeist. Also, Kono and Adam are kidnapped by what appears to be a death cult.

Five-0 must free McGarrett's mother, Doris (Christine Lahti), when Catherine (Michelle Borth) informs them that she was captured and is about to be executed after attempting to free Wo Fat's imprisoned father. Also, Chin loses his appeal to have Sara's adoption delayed, and she must move to Mexico.

While Danny chaperones Grace'S winter formal, terrorists seize the venue and hold everyone hostage in order to kidnap a diplomat's son.

Five-0 investigates one of history's most notorious unsolved mysteries following the murder of a conspiracy theorist who questioned why JFK's cabinet was on Oahu just before his assassination.

Five-0 investigates the 10-year-old cold case of a missing teen when a boy suffering from PTSD undergoes hypnosis and realizes he may have witnessed her murder. Also, Danny's sister, Bridget (guest star Missy Peregrym), visits Oahu for a business conference, and he suspects that she may be getting too close to a co-worker.

Five-0 races to Mexico where Chin puts his life on the line after his niece Sara (Londyn Silzer) is kidnapped. Duane "Dog" Chapman returns as himself and George Takei returns as Chin's Uncle Choi.

After Chin is kidnapped by a cartel in Mexico, Five-0 must find and rescue him before he is executed by the group that's out for revenge. Also, Grover goes undercover as a car salesman to investigate a murder that turns out to be far more complex and dangerous than expected.

As Max prepares to say goodbye to his Five-0 ohana, they must investigate a murder during a police convention on the Island. Jimmy Buffett returns as Frank Bama.

Five-0 must go up against an aggressive U.S. marshall, Lincoln (Lou Diamond Phillips), when a man wanted for murder escapes capture and seeks asylum in the sovereign land belonging to the Nation of Hawaii. Lou Diamond Phillips guest stars.

When working a murder case involving the illegal practice of shark finning, Five-0 uncovers the possibility that a former Nazi war criminal may be hiding out in an old leprosy colony in Hawaii.

While McGarrett and Danno celebrate Valentine's Day with their girlfriends, the rest of Five-0 investigates the murder of a man taking a class on how to land women.

McGarrett and Five-0 once again become entangled in the twisted mind games of serial killer Dr. Madison Gray (Elizabeth Röhm) when she stumbles into HPD covered in blood that matches Alicia Brown's (Claire Forlani), and claims amnesia.

MacGarrett and Danny finally track down the missing uranium, which has been used to build a bomb located in the middle of the jungle. Now, they must carefully extract the unstable explosive through treacherous terrain before it detonates. Darius Rucker guest stars.

McGarrett and Kono suspect that an abused young girl may be the victim of a sex trafficking ring on the Island. Also, Chin and Grover investigate a murder at a sober living facility.

Five-0 helps PI Harry Brown (guest star William Forsythe) work the case of a kidnapped wealthy woman whose husband may have something to hide. Also, Rachel tells Danny that she is getting a divorce from Stan.

McGarrett and Five-0 are captured and face certain death after tracking a dangerous nemesis to the Island of Lanai. Also, Grover takes his son to Chicago where he testifies against a dirty cop from his past.

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 at his new construction job and asks Jerry to help him discreetly investigate.

Danny protects a coma patient showing signs of waking who was the key witness from his last HPD case before he met Steve and joined Five-0. Lori Petty guest stars as Nurse Jenny Kitson, and Michael Paul Chan guest stars as Danny's former HPD Captain, Tanaka.

When McGarrett gets a tip that someone is plotting a terrorist attack on Oahu, Five-0 searches for those behind it before it's too late. Also, Chin and Abby have a very difficult decision to make.

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 affected by the case, makes a life-changing decision, on the seventh season finale.