Overview: Dan Farrell (RS) runs into many dead ends as he endeavors to discover why an important scientist suddenly died.
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First Air Date: Sep 20, 1968Last Air date: Mar 19, 1971Season: 3 SeasonEpisode: 76 EpisodeRuntime: 90 minutesQuality: HDIMDb: 6.80 / 10 by 12 usersPopularity: 72.797Language: English