In a huge interview on the SFX website, Davies revealed little about the plot:
“Itâ€™s too soon to give away the story, but Iâ€™ve always had this story in mind, and the whole existence of season four will make sense once you know what the story is.”
However Russell, who has been living in LA since the middle of 2009, compared the tone of the new episodes to that of Torchwood: Children of Earth.
“This story is also very dark,” he revealed. “I think with [Children of Earth], Torchwood found its feet.”
There’s also an interesting moment in which RTD reveals that he’s a bit of a PR bulls***ter…
“Jane Tranter [head of BBC Worldwide's American arm] planned this more than I ever did. For many years she was going to move out here and do this job, and sheâ€™s always wanted dramas that could move onto that sort of scale and be funded in this way, so it all fitted with her plan really â€“ it all just sort of naturally fell into place. And if no-one had ever bought it Iâ€™d now be telling you it was naturally dead!â€
Who can you trust these days? Head on over to the SFX website for more of this interview, or check back over the next day or so as we pull more interesting quotes out…