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Dr. Kline's deadly toxin is lost, he is having second thoughts about his plan, and McGarrett has to find the vial before it disintegrates and poisons the whole island. Already the toxin is doing its deadly work as innocent people come into contact with it.
First Air Date : Sep 20, 1968
Last Air date : Apr 05, 1980
Episode : 284 Episode
Season : 12 Season
Runtime: 60:14 minutes
Studio: CBS
Country: United States of America