By Franklin W. DixonFrank and Joe Hardy suspect that their ally Chet Morton is the sufferer of a summer time institution swindle and provide to aid get his a reimbursement. whereas probing a baffling housebreaking on the Seneca Indian Reservation in big apple country they examine Zoar collage situated within sight. Clues that Frank and Joe discover point out that there's a connection among the Zoar collage swindle and the robbery of the Senecas' gold tribal relic Spoon Mouth. This startling discovery propels the teen-age sleuths right into a sequence of complicated and hazardous events. strange-acting university professors, a helpful coin assortment, and a taciturn Indian who refuses to debate the mysteries surrounding Spoon Mouth -- all mixture right into a fast moving tale with numerous shock twists that might thrill the great legion of Hardy boys enthusiasts.