Doctor Who: 6 Things That Explain The Matt Smith Era

5. The Formation Of The Kovarian Faction

As Lem explained, Madame Kovarian led a group of the Silence, who travelled back in time to prevent the Question being answered. Their method? Kill the Doctor, so he can't answer the question. They built TARDIS-like ships, as first seen in 'The Lodger', and made their home presumably on Earth. Their first assassination attempt on the Doctor was to blow up the TARDIS. This seems like a daft wayto stop a second Time War, but maybe, the Silence believed that no universe at all was better than one involved in a Time War. Obviously, the Doctor rebooted the universe and survived though. And it's not a big stretch to imagine the Silence infiltrating the TARDIS, given that Tasha Lem could fly one. But what about the cracks in the wall? How did they return in 'The Time of the Doctor'? Well...