
by Katarina Mazetti · Coédition Thierry Magnier/Gaïa Editions · tapa blanda · ISBN 9791035202545

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«Les cousins Karlsson Tome 9 - Trompette et tracas» is the children's mystery novel by Katarina Mazetti, in paperback, 192 pages, in French.
During the Whitsun holidays, the Karlsson cousins travel to the island of Grèbes. Regine, George's half-sister, finds a mysterious package in her backpack, perhaps linked to the bomb alert at the airport. With strangers prowling by boat at night and felled trees near the house, the mystery deepens.
It is the ninth title in the Les cousins Karlsson series (Kusinerna Karlsson). Original work in Swedish, «Trassel och trumpeter», published in 2018.
Mystery and adventure novel aimed at readers aged 11 to 12, with friendship, humor and ecology as a backdrop.

Vera Katarina Mazetti was a Swedish author and journalist. She made her debut as a writer in 1988 with the picture book "Här kommer tjocka släkten!". Mazetti worked as a producer and presenter at Sveriges Radio between 1989 and 2004. She died on 30 May 2025, at the age of 81.
