People are out of their home on a Saturday night or they're at the movies or they're at dinner and a lot of the people who flip on the television are doing just that. They may have never seen your show before and you can't count on to your audience to be there week in and week out.
You know, back in the 1950s and '60s, when J. Edgar Hoover was making the FBI the respected organization it used to be, oftentimes they would find a fugitive and basically have his house surrounded, and then put out a press release saying he was on the top 10 most wanted list. And 10 minutes later,