Question: Who directed an episode of the American science fiction television series based on a story by a man who followed in his father's footsteps and joined the Los Angeles Police Department, where he also began to write scripts for television?
Sentence (from "Gene Roddenberry"): Eugene Wesley Roddenberry (August 19, 1921 – October 24, 1991) was an American television screenwriter and producer.
Relevant evidence: No