What year did Showtime order a 4th season ?
In 1991 , HBO and Cinemax debuted the first premium television multiplex service in the United States , Showtime soon followed with the testing of its secondary service , Showtime 2 , on October 1 of that year on two systems operated by TeleCable ( one of these systems , TeleCable 's Racine , Wisconsin operation , had also participated in the multiplexing test for HBO and Cinemax ) .