Christmas Catastrophe

Casey and her family are attending her mom's annual Christmas eve party, there is laughter and joy all around the house, everyone is having a great time till things get a little weird when the lights go out and go back on again. Everyone brushes it off and goes back to what they were previously doing, when later on Casey's mom notices the door open, when going to close it something unexpected happens and Casey's world fills upside down. Who was it and what will happen, read on to find out.