When does Fillmore! return?

A parody of popular police dramas of the 1970s, Fillmore! is centered on reformed juvenile delinquent Cornelius Fillmore and his new partner, Ingrid Third, members of the Safety Patrol at X Middle School. The series was aimed at children, but attracted an older audience with its '70s references. It maintains a dedicated fanbase and is considered a cult hit.
Twelve-year-old Cornelius Fillmore (voiced by Orlando Brown) is a juvenile delinquent with a record. The show is based around him and his partner Ingrid Third at X Middle School, which is located in the suburbs of Minneapolis and Saint Paul in Minnesota. Fillmore and Ingrid solve crimes and mysteries.