Kevin Williamson has been known to put his women characters in peril, and his latest show, STALKER, which begins tonight on CBS (10/9c), is no different.  Within the opening minutes, someone is lit on fire at the hands of, you guessed it, a stalker!  The case then heads over to the Threat Assessment Unit of the LAPD where we meet no-nonsense head of the unit, Lt Beth Davis (Maggie Q, who deserves better), as she greets her staff and newest