My first idea for plot

My opening shot would be a man coming home after work to a house with odd lights on, by this, I mean dark rooms surrounding a room with one light on. The garage should be three quarters open, and the front door unlocked. As he walks in he can smell dinner, and walks into the kitchen expecting to see his wife, but all he sees is the table fully set, except for for the cups, which are on the counter, one cracked. he then walks around the house, puzzled by the lights, and sees only a couple of odd items on the floor (such as a sweater, purse, phone etc). He then notices a tap was left running, with a toothbrush with toothpaste by it. He also goes into the living room where the T.V has been left on, and his wife's glasses are on the couch next to it. He then hears a scream from the kitchen and runs toward it. Once there he sees an open door, moving forward and backwards, and an open window, with the curtain flapping and the wind moving slightly as well. after three seconds the phone rings.