The Lazarus Project's Caroline Quentin: 'I've never read a script as good as this!'

"Wes is the boss of the group — she's the highest rank of the organisation that we meet on screen. It's very clear that there are masses of rungs above her, but she has the power to press the button to turn the clock back. But we don't really learn much about her privately — I think the less you know about her, the less vulnerable she is."

"I can't remember when we actually finished filming, it's quite a while ago now, but for me it's just become increasingly prophetic and therefore quite unnerving. It's made me think that Joe [Barton], who wrote it, is in touch with people that we don't know he knows, because he seems to have predicted absolutely everything hideous that has come upon us since! Having spoken to him the other night, he seems quite surprised himself at how accurate those predictions were."

"I've never read a script as good as this. I got sent all of them, and I read them in one sitting, which was stupid — I was exhausted! I started late, and I just read into the night. I've never done anything as well-written, as funny, as moving, as contemporary, as relevant, as charming. They are the most exceptional pieces of work, individually and as a series."

"Every day! It was a glorious experience, really, to walk up to your fellow cast members in the morning and go, 'where are we today? What year is it? What's just happened? Is he dead? Has that gone off?'. You feel a bit bad if you do that on an ordinary job, because you might be shooting slightly out of sequence, but on this, you felt no shame in asking those questions because actually people did know. Our directors knew, and our design team had to be really on it, because we're allowed to kind of find our way in the morning, but you can't have the wrong sequence of footage coming up on your computer! So fortuitously, we were surrounded by people who are much cleverer and better prepared than we were."

"We had a brief but intensely deep conversation about the choices one makes, and about morality and ethics. I think what's really interesting for me is how an audience is going to feel about those things, because I wonder if they will feel very strongly sometimes that we do not, as a group of people, have any right to interfere. I really can't wait for an audience to join us on that journey, and hear what they think. This show is fast and funny and furious and exciting — some of those stunt sequences are worthy of a Bond film, they really are — but the nub of the story is always about who has the right to make that call, and if you have the right, do you make that call? I just can't wait for an audience to join us in that."