The Blue Envelope Mystery
- ປີ: 1916
- ປະເທດ: United States of America
- ປະເພດ: Drama
- ສະຕູດິໂອ: Vitagraph Company of America
- ຄຳ ສຳ ຄັນ:
- ຜູ້ ອຳ ນວຍການ: Wilfrid North
- ຫລໍ່: Lillian Walker, John Drew Bennett, Bob Hay, Charles Kent, Josephine Earle, Harry Northrup