The Thea Sisters and the Mystery at Sea!Book - 2016
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.
Publisher: New York : Papercutz, 
Branch Call Number: Fiction Stilton CHILD
Characteristics: 50 pages : color illustrations ; 24 cm