11:30The Sarah Jane AdventuresSeries 4Episode 8: The Empty Planet: Part 2CBBC Duration: 28 minutes Audio described Signed Sun 27th May 2012, 11:30 on CBBC ChannelAvailable for 11 monthsWatch nowChildren's science fiction drama. Clyde and Rani race against time - but what is the secret of the robots?ContributorsSarah Jane Smith:Elisabeth SladenClyde Langer:Daniel AnthonyRani Chandra:Anjli MohindraHaresh Chandra:Ace BhattiMr Smith:Alexander ArmstrongCarla Langer:Jocelyn Jee EsienGavin:Joe MasonRed Robot:Paul KaseyYellow Robot:Ruari MearsVoice of Robots:Jon GloverProducer:Brian MinchinDirector:Ashley WayWriter:Gareth RobertsGenresChildren'sDramaBrandThe Sarah Jane AdventuresSeriesThe Sarah Jane Adventures: Series 4 Source: BBC Online