The series starts transmitting at 4:35 pm on BBC One with the second episode is shown immediately afterwards at 5:15 pm on CBBC. The following week has ep 2 at 4:35 pm on BBC One, and episode 3 on CBBC at 5:15 pm.
More info and pictures can be seen here, but here a few extra bits:
Rani Chandra ... 15, inquisitive, smart and sassy. Wants to be a journalist, and thus idolises Sarah Jane just a little. In return, Sarah Jane takes her happily on her investigations. She gets on well with her parents, although she's always embarrassed that her dad is the new Head Teacher at Park Vale.
Gita Chandra ... Rani's mum is a strong-willed, independent businesswoman, who runs her own flower shop called Bloomin' Lovely. She likes Sarah Jane - she appreciates the fact she wants to help Rani be a journalist. Gita is a lovely person, although she can occasionally be a little overpowering and tends to burst into things uninvited, not taking the hint.
Haresh Chandra ... The new Head Teacher of Park Vale and Rani's dad, he can be prone to slight pomposity, due to the authority at the school. A great cook, he adores Rani and is very pleased that she has befriended Luke Smith, whose intelligence he respects. He's decidedly less impressed by her friendship with Clyde, who he sees as trouble.
Ep 1 - The Last Sontaran
Part One - Reports of strange lights around the Tycho Radio Telescope lead Sarah Jane, Luke, Clyde and Maria into a terrifying forest encounter – and Sarah Jane comes face to face with her oldest enemy. Meanwhile Maria wrestles with a huge decision when her dad is offered a new job in America.
Part Two - Sarah Jane and the gang have only 40 minutes to save Earth as Sontaran Commander Kaagh plots to bring the world's orbiting satellites crashing down on nuclear installations across the world. And Maria's Mum finally gets to the truth from Alan – but will they be in time to save Maria?
Ep 2 - The Day Of The Clown
Part One - New girl in Bannerman Road, Rani Chandra, is being haunted by a sinister clown – does it have anything to do with the local children that have gone missing? When Clyde's friend disappears the trail leads them to a strange circus museum – and the legend of the Pied Piper!
Part Two - Sarah Jane's investigation into Spellman and Odd Bob the Clown takes her to a meteorite at the Pharos Institute. But Spellman's plot to make all of Park Vale's pupils vanish leads Sarah Jane into a confrontation with her own childhood fears in a bid to save Luke.
For all of you who are suffering from lack of Who, well at least SJA can keep you going!