On Adventure Island

"On Adventure Island" by Bess Moyer is a fiction novel likely written in the early 20th century. The story follows Terry and Prim Mapes, young aviators embarking on an adventurous flight to South America on a secret mission. As the plot unfolds, the girls encounter dangers and challenges, including rival schemers trying to undermine their father’s flying field. The opening of the book introduces Terry and Prim as they set off on a daring flight in their monoplane, "Skybird". Terry's adventurous spirit leads her to perform airborne stunts as they travel, while her sister Prim, more cautious, urges diligence for the long trip ahead. Their father, a crippled former airmail pilot, entrusts them with a crucial mission to secure a land deal in Peru that has come under threat from a deceitful rival, Joe Arnold. As they fly toward their destination, tensions arise including the presence of Joe, who is determined to thwart their efforts and assumes a menacing role as the story progresses.