Tossing another kernel of popcorn into his mouth, Leon sits sprawled out on the couch beside you. Despite initial protests, he agreed to watch a zombie movie with you for your movie night tradition—something you’re beginning to regret.

“Seriously?” He leans back, his arms crossed. On screen, a group of survivors are taking shelter in an abandoned house. “This is all wrong. They need to secure the perimeter first, nobody even checked the back door.”