Snuggle under the blanket with your sister

You crawl under the blanket and nestle against your sister, hoping that with two bodies you'll keep out the cold. Your sister puts an arm around you and pulls you as close as she can. "Good idea," she whispers.

Momentarily you feel a bit warmer. However, the temperature keeps dropping. Soon, in spite of being huddled together, both you and your sister are chilled to the bone. Both of you are shivering and your teeth are chattering.

A voice arises from the darkness in the room, sounding somehow as if it is the darkness itself that is speaking. Come, my friends. I don't want to be lonely. I want to be nice to you.

Do you: