You sit by your boarded-up window and listen for any sign of movement outside. When you're pretty sure it's clear, you open your door slightly and slowly slip outside and into the deserted street, armed to the teeth. The streets are littered — trash and the remains of your neighbors saturate the streets. As you make your way down the sidewalk, you hear a noise behind you and whip around to check it out. It's the old lady who lived upstairs, but she looks...different. She's heading your way with a bloodthirsty look in her eyes. This is no time to be squeamish — she'll be just the first of many standing in your way. Will you make it out of London? More importantly, will you stay human?