S03E13: 'The Last of the Time Lords'

Okay, so no preview tapes have been doing the rounds due to the BBC's desire to keep the climactic events of the third season finale under wraps. Fair play too, because we don't really want to be spoiled do we? So here's a quick guide to what might be coming up, based on the various snippets that have been released to the media...

'The Last of the Time Lords' has very much been pitches as Martha Jones' episode. At the end of 'The Sound of Drums' she managed to teleport to relative safety, away from the clutched of The Master. We know that Freema Agyeman has shot scenes by the sea, at night, emerging onto the beach. It looks like she will hook up with a character called Thomas Milligan, played by former EastEnders star Tom Ellis.

Curiously, the 'next time' trailer depicted Martha examining the inner contents of a Toclafane. What could be lurking inside? Bear in mind that the last two season finales have both featured the 'shock' return of the Daleks, so perhaps an old foe might be somehow hidden inside those murderous, metallic orbs.

According to tabloid reports, three endings have been filmed for the finale. These apparently involve Martha being abducted by aliens, The Doctor regenerating and the Tardis blowing up with our time travelling crew inside. These may well be red herrings and something more jaw-dropping may be on the cards. Having said that, who wouldn't be utterly stunned if David Tennant turned into Robert Carlyle, as previously rumoured? That's not a purely rhetorical question, as it's easy to imagine a nation of Tennant lovers emitting one final squee and burying their heads in their hankies.

Remember the sudden appearance of Catherine Tate in the season finale last year, setting up the events for 'The Runaway Bride'? Could a Kylie Minogue appearance be on the cards, given that she's all set to appear in the festive edition of Doctor Who this year? Also, don't forget that Hugh Grant's name was banded around for the Christmas episode not so long ago, so who knows what surprise we may have in store? The only way to find out is to tune in this Saturday at 7.05pm...