The Outdoor Girls Series Follows The Adventures Of A Group Of Young Women Who Engage In Outdoor Activities And Solve Mysteries. In The Strange Cabin On Catamount Island The Girls Encounter A Mysterious Cabin On An Island And Become Involved In Solving The Secrets And Puzzles Surrounding It. The Novel Incorporates Elements Of Mystery Adventure And Friendship Typical Of The Series' Style. The Stratemeyer Syndicate Was Known For Creating Popular Series Such As The Nancy Drew And Hardy Boys Books Among Others. The Outdoor Girls Series Including The Strange Cabin On Catamount Island Was Aimed At Young Readers And Offered Engaging And Adventurous Stories Centered Around A Group Of Spirited And Resourceful Girls.