The sleepover

Julian and Spencer got invited over to their friend's house for their halloween sleepover. Everyone is in their Halloween costumes, being the senior teens at the time, they managed to grab alcohol from their friend Maddison that she got from her parent's alcohol cabinet and store. While playing spin the bottle together surrounded in a circle, Spencer spun the empty beer bottle and it landed on Emma.
As everyone was cheering them on to kiss, the lights went out with a static. After the chaos of everyone's shouts of confusion, flickering back on, the lights shone back up with a sudden flash. As the young group of friends was checking on eachother, one by one they started to notice that one was missing... With a rough blood trail in the carpet leading towards to blackened out bathroom...