McGarrett clashes with a police captain over Five-O's handling of a murder/kidnapping; guests Linda Purl, Scott Brady.
A heroin smuggler is slain before he can sell information to the police; guests Ed Flanders, Bruce Boxleitner.
A deputy public defender criticizes McGarrett after he arrests a poor child for a minor theft; guests France Nuyen, Bert Convy.
A Honolulu death is linked to the disappearance of a valuable human fossil from China just before Pearl Harbor; guest Vic Tayback.
An investigation of five rape-murders points to the police; guests John Beck, Katherine Justice, Alan Fudge.
A federal tax agent (Don Porter), posing as a man indicted for tax evasion, murders for $600,000 in stolen money.
Injured Danny fights to recall details of an assassination plot against a Chinese diplomat; guests Keenan Wynn, Philip Ahn.
An Army officer (Clu Gulager) plots to hold a scientist for a ransom of $1 million in diamonds; guest Michael Conrad.
The team seeks a killer who inscribed lines from Byron on the legs of his victims, one of them Danny's fiancee; guest Ann Archer.
Evidence indicates a boat explosion that killed a businessman and injured McGarrett may be one in a series of similar cases.
An attempt to rescue a kidnapped boy goes awry when Kono becomes the abductors' new hostage; guests Andrew Duggan, Peter Bonerz.
One of McGarrett's most trusted investigators is accused of accepting a bribe from a major narcotics dealer; guest Martin Sheen.
McGarrett clashes with the Navy when he tries to bring in a suspect in a shore patrolman's murder; guest Christopher Walken.
The owner of a tuna boat uses his craft to smuggle gold bars into the islands; guest Paul Richards, Marj Dusay.
McGarrett must protect an underworld kingpin (Ricardo Montalban) he is trying to convict of racketeering activities.
An official's death involves strange clues, including a woman with a camera and a man with a briefcase; guest Simon Oakland.
The Hawaiian governor assigns McGarrett to break a ring of con artists swindling visiting rich widows; guest Kevin McCarthy.
Billonario excéntrico es sospechoso de haber matado a uno de sus socios de negocio.
Danny se hace pasar como marinero para descubrir círculo de drogadictos.
Miembros de una firma de finca raíz se convierten en las víctimas de unos mariscos envenenados.
Hombre convicto de asesinato escapa de la prisión y amenaza con matar a ex enamorada.