Digital Spy......

It's The Doctor's turn to take a break this week, as Donna takes centre stage in the distinctly hit and miss 'Turn Left'.

Billie Piper is back, but very conspicuously struggles to nail Rose Tyler's chavette dialect and sounds like a female Chris Eubank.

The plot meanders for a fair while, exploring a sci-fi spin on the butterfly effect.Fortunately, the story soon veers off in a deliciously dark direction towards the end and whips up the excitement for the impending finale.

Anyway, please check out our full review of the episode as soon as it's aired next Saturday. For now, here are the teaserish spoilers, with two bogus ones lurking in their midst...

The true mastermind of the ill fate that happens to Donna in this episode will be familiar to fans of one of the Doctor Who spinoff shows.

*Oliver Morgenstern from 'Smith And Jones' is back and in fine form.

*Donna suggests that footage of a Titanic replica spaceship flying towards Buckingham Palace is actually from a sequel to the famous Leonardo DiCaprio/Kate Winslet film.

*There's a Wayne's World moment where Donna and Wilf sing Queen's 'Bohemian Rhapsody'.

*Rose Tyler tells Donna that The Darkness is coming. Donna tells her that she saw them live in 2004 and they only had one good song.

*Donna insults someone by calling them Vera Duckworth.

*Mr Chaudhary's wandering hands cause Donna some consternation.

*Rose tells Donna two vital words to pass onto The Doctor. The first one is a name of an old enemy last seen in an escape pod. The second is "lives".

*Donna has a beetle on her back and soon Wilf finds antlers on his head too.