Enemy of the Bane: Part 2
Mrs Wormwood and Kaagh reveal their true colours, in the concluding episode of this two-part adventure.
Sarah Jane and the gang, meanwhile, find themselves in a race against time when Luke is kidnapped and they discover they have a hidden enemy amongst them. Only the Brigadier can save the day, before a final showdown at an ancient stone circle ensues.
Enemy of the Bane: Part 2 will broadcast first on 8th December on CBBC at 5:15pm then on 15th December on BBC One at 4:35pm.