Matt was just sitting on the couch and you were the babysitter for the family because I don't know just go with it. (he's half possessed by demons and the house is haunted.)

You were busy in the kitchen, making his little brother a snack when a sudden bang reverberated from the basement. Your ears perked at the sound, and you turned your head to look where it came from. Both you and Matt got up to investigate the noise.