McGarrett and his team rush to find a test tube containing the deadly ?Q strain? which Dr. Kline has hidden and, if not found within 12 hours, will devastate Hawaii McGarrett and his team rush to find a test tube containing the deadly ?Q strain? which Dr. Kline has hidden and, if not found within 12 hours, will devastate Hawaii« less

In the first part of this captivating two-part episode, the disappearance of a scientific genius, Dr. Alexander Kline, sends shock-waves through the islands In the first part of this captivating two-part episode, the disappearance of a scientific genius, Dr. Alexander Kline, sends shock-waves through the islands« less

Steve encounters resistance from federal agents when he attempts to uncover the mystery behind a research scientist?s sudden disappearance from his important government post Steve encounters resistance from federal agents when he attempts to uncover the mystery behind a research scientist?s sudden disappearance from his important government post« less

Tom Skerritt (who later starred as the sheriff on TV?s Picket Fences) appears as a cop whose wife has been murdered Tom Skerritt (who later starred as the sheriff on TV?s Picket Fences) appears as a cop whose wife has been murdered« less

Martin Sheen is featured in this episode that centers around Chin Ho Kelly, one of McGarrett?s most trusted investigators Martin Sheen is featured in this episode that centers around Chin Ho Kelly, one of McGarrett?s most trusted investigators« less

After a crooked card game leads to the murder of a young honeymooner, the victim?s brother sets out to find the man responsible After a crooked card game leads to the murder of a young honeymooner, the victim?s brother sets out to find the man responsible« less

A Vietnam vet is revealed to be behind the kidnappings of several local children A Vietnam vet is revealed to be behind the kidnappings of several local children« less

Christopher Walken guest stars in this tense episode about an AWOL sailor accused of shooting a Navy shore patrolman Christopher Walken guest stars in this tense episode about an AWOL sailor accused of shooting a Navy shore patrolman« less

After an adversary from McGarrett?s past robs a bank under the noses of the Five-0 team, McGarrett follows a trail from Hawaii to Hong Kong to nail the brilliant thief After an adversary from McGarrett?s past robs a bank under the noses of the Five-0 team, McGarrett follows a trail from Hawaii to Hong Kong to nail the brilliant thief« less

The stakes are murderously high when a beach boy and a playboy vie for the attentions of a seductive heiress in a bizarre card game The stakes are murderously high when a beach boy and a playboy vie for the attentions of a seductive heiress in a bizarre card game« less