Sinister Island

Miller ignores the warning about visiting a haunted island and soon mysterious things begin to occur with his friends!
Excerpt:
"Captain's Island is not far from civilisation as one measures space. Dealing with the less tangible medium of custom, it is—or was—practically beyond perception. James Miller didn't know this. When he had thought at all of his friend Anderson's new winter home he had pictured the familiar southern resort with hotels and cottages sheltering Hammonds peerage, and a seductive bathing beach to irritate the conservative."

Charles Wadsworth Camp (1879–1936) was an American author, best remembered for his mysteries and potboilers. He is father of the celebrated author Madeleine L'Engle. Some of his works were also adapted into films.