Now we know I'm paranoid----but---when/if someone knocks on the door at night,the tv is turned off and all inside lights are out before I open that door! the porch light in my old house was set to be in their eyes. Not here,but it's turned on. Now if they've called,that's another matter,the teacups are out and there may be cookies. So-how do you answer an unexpected knock at night?