There are some huge twists in store for the eighth instalment of Torchwood: Miracle Day - with a figure from Jack's past back on the scene, things are about to change, big time!

Meanwhile, the CIA begins to unravel the mystery of the Miracle, traitors are revealed on several fronts and one relationship comes to a sudden and bitter end.

Check out our ten teasers for the next episode of Torchwood: Miracle Day below:

1. Jack experimented with some unique facial hair back in the 1970s.

2. "I could murder a pint of bitter right now."

3. There's another Ianto reference for all you fanatics!

4. "You're telling me the whole world got screwed because two *** **** had a ***** ***?"

5. One character performs a groovy dance.

6. "Please, feel free to p*ss yourself!"

7. Oswald's plans for self-improvement go badly wrong.

8. "Basically she's made up of positive thinking and colostomy bags."

9. The mysterious 'Blue-Eyed Man' returns, and he has a warning for Jilly.

10. "This is not like the old days of Torchwood."

What do you make of our teasers? Let us know below!