The Mystery of the Brass-Bound Trunk

Nancy plans a trip to South America by boat, along with chums George and Bess. They have joined a tour being conducted by an exclusive girls school. To Nancy's amazement, the mother of one of the students protests Nancy's presence on the tour. Prior to departure, Nancy learns there are issues involving the Trenton trunk company, mostly concerning the quality of merchandise; the owner of the company, who is a friend of Carson Drew, asks Nancy to interfere in daughter Doris' life and relationships so she will marry the son of a former business partner. Nancy must solve several mysteries: who the mysterious red-haired young man could be; why Doris is so withdrawn; what is going on with the trunk company; why did Mrs. Joslin so vehemently protest Nancy's presence, as well as aiding her daughter Nestrelda; and solve the mix-up with Nestrelda's and Nancy's identical (or are they?) monogrammed Trenton trunks.--Wikipedia.