21 Jump Street is the headquarters for a squad of police officers who specialize in investigations relating to young people. Each of the Jump St. personnel was selected for their ability to pass for high school or college students, allowing them to operate undercover in areas where it is difficult for regular police officers to blend in unnoticed.

American TV crime series from 1987 to 1991

A.J. Simon is a polished fellow with a taste for classic cars and tailored suits. Rick Simon is his less refined (but still pleasant) older brother who has a taste for cowboy boots and four-wheel drive pickups. The two of them live in San Diego, where they own a private detective agency. The series chronicles their exploits.

Robert McCall is "The Equalizer", a private detective with a lot of contacts who is available for hire if you have a problem that you don't know how to solve. His no-nonsense attitude, compassion, and experience with dealing with a wide variety of situations makes him a powerful and useful detective.

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