Doctor Who Series 4 preview

What does the Doctor see?

Well, in just a couple weeks Doctor Who will be transmitted again on BBC One. The ending of Series 3 was exciting and a bit odd. Martha decided to stay so the Doctor will have to find another companion. But the preview for Series 4 looks extremely exciting (I'll just say I saw glimpses of BOTH previous companions) and the return of another foe of the Doctor that I shall not mention.....yet.

Back to the new companion, it will be someone the viewers have already seen (think one of those Christmas specials). But we will have to wait until summer for these new episodes to be aired here in America on SciFi.