Beyond hollywood: The first hour of Christopher McQuarrie’s first foray into television, the mystery-drama “Persons Unknown” is exactly how you would set up a TV show with a finite number of episodes (in this case 13). The premise is killer: seven strangers wake up in a hotel in a small town in the middle of nowhere. The town looks a lot like a Hollywood movie backlot, and everything there is to see can be seen from the porch of its lone hotel.