The Shadow People ( audio story ) The Shadow People was the fifth " Sarah Jane Adventures " audiobook released . It was written by Scott Handcock , produced for BBC Audio and read by Elisabeth Sladen . It accompanied the CBBC broadcast of series 3 . Publisher ' s summary . A camping trip spells trouble for Sarah and friends , in this exclusive audio adventure read by Elisabeth Sladen . When both the school bus and Sarah ' s car break down in Snowdonia , the gang find themselves stranded in the middle of nowhere . Exploring by a lake , Rani sees a shadowy figure that looks exactly like her . Then Sarah hears a voice asking for help , and sees a mysterious figure outside her tent . Who is watching them , and why ? How can Rani be in two places at once ? And what secret does a nearby cave hold ? Plot . Sarah ' s Saturday off is interrupted when Luke and Clyde come to her door , wanting a ride to school , having missed the bus after an encounter with an alien disguised as a cat . That day the school was having a field trip to Wales , and Sarah knows that it was important to Luke . They use a cell phone tracking device to track Rani ' s cell phone . After a long drive , they discover the bus broken down on the side of the road . Not long after , their car breaks down as well . Neither the car nor the bus will even begin to start . The four of them , Sarah , Luke , Clyde and Rani , go looking around . They walk up to a pond , noting how beautiful it is . Rani , however , seems nervous , looking over her shoulder , as if she is looking for someone . Rani , as it turns out , is nervous due to a strange thing that happened to her earlier that day . While she was by the pond , she began to hear voices calling out to her , but when she would look around no one would be there . Then , out of the corner of here eye she saw the reflection of someone crouching over her in the pond . Upon closer inspection , she found the figure was another her , crouching over her reflection with bloodshot eyes . The apparition soon passed , yet she still felt like she was being watched . Sarah agrees , secretly also feeling it . Soon nightfall comes , and they are put into pairs to pitch tents to sleep in . Sarah , Luke and Clyde work together , and Rani helps her father . Meanwhile Sarah wants to find out more about the figure that Rani had seen . She goes to a mountain and finds out that a Shedagen spaceship is inside the mountain . Rani Clyde and Luke are also there , however Luke is there twice . It turns out that the second Luke is one of the Shadow People who imitates Luke ' s appearance . The figure tells Sarah that it was working on the space ship of the Shedagen when the space ship crashed on Earth . There it took care of the Shedagen until they died . Then it stopped existing until Rani , Clyde , Luke , Haresh and Sarah arrived there , At first it tought that it was one of the students , but then it realised that it was one of the Shadow People and was created by the Shedagen . It is afraid , that it stops existing when Sarah and her friends leave , so it wants them to stay where it can serve them . However Sarah convinces it to let them go . The figure waves Sarah when she is leaving . Then it disappears .