The first show of this type was
Night Heat, a cop series produced in Toronto by Sonny Grosso Productions. It premiered in Canada on CTV in 1985, and later joined the CBS Late Night lineup in 1987. It was the first Canadian-produced drama ever to air on a U.S. network.
That's when things started to get weird. CBS wanted a gritty U.S. cop show set in a gritty U.S. inner city, but CTV (which was still paying most of the bills) needed more domestic drama. When the characters started flashing American eagle police badges and calling up the "district attorney," CTV went ballistic. Already under fire for producing so few domestic TV shows, the last thing the network wanted was for Night Heat to be perceived as yet another American import in its prime time line-up. Moreover, the Canadian federal tax incentives and production grants the producers were getting likely bound them to certain minimal "Canadian content" rules.
Forced to square the circle, the producers decided to set the show
nowhere, albeit a very American-flavoured nowhere. The American eagle police badge became a mutant eagle/beaver hybrid that was never seen in close-up, and all sorts of innocuous words and objects suddenly became more taboo than
George Carlin's infamous "
seven words you can't say on TV." You couldn't show flagpoles, currency or license plates or make overt references to any level of government. Instead of a "district attorney" or a "crown prosecutor" the cops would phone the generic "prosecutor." Courtroom scenes were laughably torturous to produce, for obvious reasons.