This is easy. In fact, I practice for just this scenario every year on the night of Oct. 31. The shutters get closed, the deadbolts are thrown, the front porch light gets turned off, as do all the lights in the front of the house, and all the doors and windows on the sides and back of the house are barred (best burglar alarm there is, and there's no monthly fee or pet food needed). I am "not home" for all intents and purposes. Not that I'm a curmudgeon or anything like that.