Blyton, Enid:
The sea of adventure :
Macmillan Children's Books, 2014.
Recovering from measles on a remote Scottish island, the children are left to fend for themselves when their host disappears. Soon they're on the trail of a ruthless enemy through the wildest and most desolate places.
5 Bände, englische Kurzschrift, (produziert in Peterborough, 2021), BNA 19833