| Mary Lawson's Secret | |
| Director: | John B. O'Brien |
| Producer: | Edwin Thanhouser |
| Starring: | Charlotte Walker |
| Cinematography: | Harry B. Harris |
| Production Companies: | Thanhouser Company |
| Distributor: | Pathé Exchange |
| Runtime: | 5 reels |
| Country: | USA |
| Language: | Silent..English intertitles |
Mary Lawson's Secret is a lost[1] 1917 silent dramatic film directed by John B. O'Brien and starring Charlotte Walker. The Thanhouser Film Company produced the feature with a distribution arrangement through Pathé Exchange. Walker's then husband, writer Eugene Walter, has a cameo part.[2]
