It was the most unforgettable season in 21 Jump Street history, featuring the farewell performances of undercover cops Tom Hanson (Depp) and Harry Ioki (Nguyen.) This Fourth Season also includes such explosive episodes as Judy Hoff's (Peete) shocking rape, the mission to El Salvador by Doug Penhall (DeLuise) to save the woman he loves, the return of Dennis Booker (Richard Grieco), a tragic secret in Ioki's past, Hanson's witnessing an execution, the fan favorite How I Saved The Senator and much more.