New neighbour Rani Chandra and adopted daughter Sky Smith later join the cast. Additionally, the group is aided by Mr Smith, a sentient extraterrestrial computer, and K9, a dog-shaped robot gifted to Sarah Jane by the Doctor.
New neighbour Rani Chandra and adopted daughter Sky Smith join the cast. Additionally, the group is aided by Mr Smith, an extraterrestrial being with advanced technology, and K9, a robot resembling a dog gifted to Sarah Jane by the Doctor.