One day, Sarah Jane Smith exists. The next, only Maria Jackson knows of her. Andrea Yates takes her place, but Maria knows that Andrea has done something to remove Sarah Jane from the space/time continuum. It is up to Maria to uncover the identity of the “Trickster” if the human race is to survive. But with Sarah Jane and Luke wiped from existence and Clyde having lost all knowledge of his former adventures, Maria must save the world single-handedly. But she finds it may be time to tell her father about her secret life with Sarah Jane if the whole world is to survive.