The Thea sisters and the mystery at sea! (Thea Stilton graphic novel 6.)
by Stilton, Thea (Author), Savino, Francesco, 1986- (Author)
Series
Summary
Discovering that the turtles on Turtle Island have gone missing, the Thea Sisters spot environment-threatening drums of a strange oil and struggle to gather help before spotting a pair of turtles entering a mysterious underground cave. Full description
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