The Blue Envelope Mystery
Movie| Title | The Blue Envelope Mystery |
| User score | 0 |
| Release date | Oct 23, 1916 |
| Genre | Drama |
| Director | Wilfrid North |
| Production country | United States of America |
| Production companies | Vitagraph Company of America |
| Run time | 50 min. |
Leslie Brennan, an heiress, suddenly discovers that she is almost penniless, and faces the ordeal of making her own living.
