The BBC Press Office has today published the plot details for episodes eleven and twelve of the third series of The Sarah Jane Adventures.

The instalments will make up the sixth and final two-part adventure of the series, The Gift, which is written by Rupert Laight.

You can read the synopses and transmission details for both episodes below:

The Gift – Part 1
Thursday 19th November, 4:35PM
When the Slitheen’s latest scheme is halted, their rivals, the Blathereen, arrive. Declaring peace between the planets, they offer Sarah Jane a gift - one that might change the future of the human race forever.

The Gift – Part 2
Friday 20th November, 4:35PM
When the Blathereens’ gift runs riot, Sarah Jane faces the battle of her life to save her son, Luke.

With Clyde, Rani and K9 trapped in a school under siege, and the whole of London convulsing under the alien threat, everything heads for a final showdown in the attic - and not everyone is getting out alive.

Series 3 of The Sarah Jane Adventures continues this afternoon with part one of The Wedding of Sarah Jane Smith at 4:35PM on BBC1/BBCHD. Join us at 5PM for our episode discussion!