You come home and you see his car. You know what I have planned and you follow the directions I left you. You quietly walk down the stairs from the garage to the basement. You can hear us talking.  I poured you a drink and left it on the bar. You grab it as you quietly sneak in. The lights are off in the next room so you know you won't be seen in there. You watch through the glass door. I know you are here and I stand up....