Jacob Mackay...
Jacob walked to the front door and noticed that the living room light was on. He could see the illumination as it seeped through from beneath the door. He was wired to observe things like that.
Usually, he switched it off before leaving and only left the light from the kitchen to illuminate the sitting room because he didn't like coming home to a dark house. His first guess was Anika. She might have been the one to have left the lights on, but he highly doubted it because Anika had been out-of-town today. He wondered if she came home early. Looking a bit tensed and puzzled, he pushed the door open and the strangest sight he never imagined seeing greeted him. Nicole was lying on the sofa, staring at the ceiling. She got immediately after she heard him enter.