Overview: Keller goes undercover as an ex-con musician to bust a crooked parole officer and his ring of parolees.
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First Air Date: Sep 23, 1972Last Air date: Jun 09, 1977Season: 5 SeasonEpisode: 119 EpisodeRuntime: 60 minutesQuality: HDIMDb: 7.00 / 10 by 86 usersPopularity: 55.335Language: German, French, Spanish, English