Run, Luna! Your Mother is a Killer

I was out shopping when my phone buzzed with a FaceTime call from my mom.

"Luna, run! You're in danger!"

Looking at her pale face and the sandy beach background behind her, I was completely confused.

"Mom, didn't you just go to the food truck to buy me some fries?"

"I can literally see your back right now. Stop messing with me—"

Before I could finish, a cold shiver ran straight down my spine, and my mind went entirely blank.

Because the woman who had gone to buy me snacks turned around. She wasn't holding a phone.

Then who was the person on my screen?