Episode 5 - Sneak Peek 1

The Doctor then walks in and he goes "scary superstitions" Frank turns around and he looks at him "excuse me?" The Doctor looks at him and smiles "children, they believe in the boogyman, they believe there's something hiding under the bed-" The Doctor looks at Billy and continues "or maybe something in their wardrobe-" The Doctor smiles "or maybe, something in the corner of their bedroom-" Billy's eyes widen with fear and The Doctor smiles "bingo". Karla goes "I'm sorry, what?" The Doctor goes "there's something spreading around the city, creatures... apparently, and one thing that these things have in common, is the fact that there is a child under the age of thirteen in every location of these creatures, and Billy...you said it was a nightmare?" Billy goes "it wasn't a nightmare-" a loud thump is heard from upstairs.