McGarrett and Five-O need to find out why a Japanese banker ritually killed himself and catch a true criminal into the bargain.

An investigation into a murder is sent off track through the modification of computer information, and Five-O must use the latest technology to rescue the case.

When a psychotic man kills his doctor, Five-O must use a unfinished painting to gather clues to his whereabouts.

When a singer witnesses a murder committed by a racketeer, Five-O has to protect her until she can give evidence, but this is not an easy job...

A vice-principal enlists the help of his students and a submarine to smuggle drugs.

A writer who specialises in solving mysteries uncovers the body in a seven year old case, but it raises more questions than it answers...

A crooked contractor and a buildings inspector are under suspicion after the new Global Trade Center in Honolulu goes up in flames.

Criminals threaten to use a special type of moth to wipe out the sugar cane on Hawaii and destroy the industry.

McGarrett must solve a daring bank robbery committed during the King Kamehameha Day Parade under the cover of a historic re-enactment.