Professor Must - Mika Keränen

The children's crime novel "Professor Must" is Mika Keränen's fifth adventure story, which tells the adventures of a secret children's society operating in Soup City. This time, the children solve the mystery of Professor Musta's laundry room. The story begins with Sadu climbing his favorite tree and accidentally overhearing a telephone conversation, which awakens his detective instincts. The man with the big white beard tells his assistant that if the police found out what they were doing in their laundry room, they would both be put behind bars in Sweden. What is happening in the laundry room is discovered by the secret society Ramps, or Olav, Anton, Reilika, Sadu and Mari, and the French bulldog Mati.