10 Chilling Doctor Who Unsolved Mysteries

The mark of a good scary story is when it makes something seemingly mundane feel absolutely terrifying. 73 Yards did this by transforming an old woman into one of the most feared creatures in the world.

There are several chilling things about this Woman, chief among them being the fact that she can send people running scared with a few simple words. But what could those words possibly be?

The incredible power that must be needed to get Ruby's own mother to abandon her is crazy to think about. There's clearly some magic or other higher force involved, but it's also likely that the words themselves are just as grave and terrible.

Perhaps the Woman speaks some deep, dark secret that should never be uttered. Perhaps there's something unnatural about Ruby that's yet to be revealed, and the Woman exposes this. Or perhaps the Woman embodies fear itself, and can speak to the things that scare people the most.

Russell T Davies has remained tight-lipped on this aspect of 73 Yards, and he will no doubt continue to. It's unlikely the real answer would be as unsettling as whatever your imagination can conjure up.