Leo Penn
Leonard Zalman "Leo" Penn  was an actor and director from Lawrence, Massachusetts who directed the  first season episode . Because he ran a day over during filming, and thus ran over budget, he was not invited back to direct more episodes.
 
Outside Star Trek, Penn helmed well over four hundred prime-time hours on a wide variety of series, ranging from I Spy to Diagnosis Murder. In 1973, he received an Emmy for directing a two-hour episode of Columbo titled "Any Port in a Storm". Before becoming a director, he acted on stage and in a few feature films, beginning with Shame (1945). His film career had just begun when Penn (a noted union supporter) was blacklisted after refusing to testify to the House Un-American Activities Committee. He also acted in dozens of TV shows.

He is the father of actor , musician , and the late actor . He was also the brother-in-law of TOS guest actor Alfred Ryder. Both he and Chris appeared with William Shatner in North Beach and Rawhide, a 1975 TV movie which also featured Nicholas Guest.

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Directors
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