The baby-faced cops at 21 Jump Street back are on the case, infiltrating high schools and hanging out at the hot spots as they continue to investigate crimes involving minors.

As the fourth season opens, Dennis Booker (Richard Grieco) quits the police force (heading over to his spin-off series "Booker") after ensuring the release of Officer Tom Hanson (Johnny Depp) from prison.



The impressive slate of guest stars includes:

Thomas Haden Church
Rosie Perez
Vince Vaughn
Shannen Doherty






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