Spuk am Tor der Zeit is the conclusion of the trilogy, the mummy of Roggelin. The children's series from the "Spooky" series by Günter Meyer is thus the continuation of Ghost in the realm of shadows.
15 year old Leo and his friends Lollo and Lisa work on his ingenious inventions to help the city’s rulers, the Medicis, from the traps and ploys of a mysterious Conspirator.
Leipzig in 1989 – Germany divided into East and West. The twelve-year-old friends Fritzi and Sophie don't care much about this - until Sophie has to flee to the West with her mother. There she struggles with prejudices against 'those from over there', but above all with her homesickness. Fritzi's attempt to at least bring Sophie her dog Sputnik fails because of the heavily guarded border. Fritzi realizes that only the fight for freedom in her country can bring the two of them together again.
Five Einsteiners and three peppercorns from Hamburg experience unforgettable holidays together. Io (Clara Jaschob) and Joyce (Matilda Willigalla) from "Schloss Einstein" secretly stay at their boarding school in Erfurt during the holidays. But suddenly there is a break-in at night. They then decide to go hunting for criminals themselves.