One for the Whovian cachers out there...
The weeping angels are a race of predatory creatures from the long-running sci-fi series Doctor Who, resembling stone statues. Since their initial appearance, they have been persistently nominated as one of the most popular and frightening Doctor Who monsters. Steven Moffatt, their creator, attributes their appeal to childhood games such as Grandmother's Footsteps and the notion that every statue might secretly be a disguised Weeping Angel.