Donna's entire world collapses, but there's no sign of the Doctor. Instead, she finds help from a mysterious blonde woman - a traveller from a parallel universe.
But, as Donna and Rose Tyler combine forces, are they too late to save the whole of creation from the approaching darkness?
EPISODE REVIEW - PENDING
In the meantime (I'm still unpacking from the vacation...) Genius. That's what he is. Russell T Davies. Genius.
And Catherine Tate. Perfect.
Things to look out for...
DOCTOR WHO FOLKLORE
PRODUCTION NOTES This a "Doctor-lite" episode. Primarily, Tennant was filming MIDNIGHT.