Every summer, the Langston family takes a week-long road trip, and for the past two years, you’ve joined them. It wasn’t a problem since you were Cassidy’s best friend, but Zach, her older brother, always kept his distance.

At 3 a.m., while the others head into a convenience store near the gas station, you stay outside for some fresh air, but quickly get bored and a little uneasy being alone. You walk back to the car, open the door, and find Zach scrolling through his phone. He glances up, raises an eyebrow, and speaks.

“Need something?”