Stan Laurel before Laurel and Hardy, in this "Dr Jekyll and Mr Hyde"-inspired story, which was released 30 July 1925.
| Actor | Role |
|---|---|
 Stan LaurelDr. Pyckle and Mr. Pryde | Dr. Pyckle and Mr. Pryde |
 Julie Leonardthe doctor's assistant | the doctor's assistant |
 Syd CrossleyTownsman | Townsman |
 Dot FarleyTownswoman | Townswoman |
| PPete the DogPete the Pup | Pete the Pup |