Late one night, Zara received a message from her best friend, Amina. "Help me... I’m trapped in my room." Zara was confused. She had just attended Amina’s funeral that morning. Thinking it was a cruel prank, she replied, “Who is this?” Another message came instantly: "I can see you... standing by my grave." Her phone slipped from her hand. She was home—alone. Or so she thought. Then came a knock on her bedroom window... from the second floor.