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Given an amazing sense of smell and a phenomenal memory, Agatha Mystery dreams of becoming a writer, but that's in the future. For now, she is a great detective! Together with her simple-minded cousin Larry, a student at a detective school, she travels the world solving the most intricate mysteries. They are assisted by a loyal major, a naughty Siberian cat, and a host of strange relatives.

Hollywood thriller

Producer Robert Morrison is filming a spooky detective story called Fatal Error. However, some strange incidents keep happening on the set, and the actors have received threatening letters. Agatha and Larry Mistry, accompanied by a colourful uncle, a majordomo and a Siberian cat, try to find out who wants to disrupt the film...