A Pathe serial in ten chapters of two-reels each: Dan Winterslip, a wealthy man in Honolulu, has not spoken to his brother, who owns a hotel next to Winterslip's estate, in over twenty years. Minerva, sister to the estranged brothers, comes from Boston to try to reconcile the two men. John Quincy Winterslip, Dan's nephew, receives a letter instructing him to retrieve a box from an attic in San Francisco and dump the contents into the ocean. He is on board a ship bound for Hawaii in which other passengers are also after the box. Dan Winterslip is murdered. Charlie Chan, a Chinese detective, offers to help solve the killing and the mysteries surround the box. Chan is looking for the person whose wristwatch is missing the number 'three.'
Allene Ray
as Carry Egan
Walter Miller
as John Quincy Winterclip
E.H. Calvert
as Dan Winterclip
Betty Caldwell
as Barbara Winterclip
Natalie Warfield
as Minerva Winterclip
Jack Pratt
as James Egan
William Bailey
as Harry Jennison
Frank Lackteen
as Kaohla
George Kuwa
as Charlie Chan
Harry Semels
as Saladine
Charles West
as Bowker
John Cossar
as District Attorney
