When a neighbor complains about strange noises, an officer goes undercover to investigate Dr. Jardine. After her cover is blown, she infiltrates his lab and stops him from performing an illegal surgery on an escaped convict.
| Actor | Role |
|---|---|
 Marin SaisLila - a Special Investigator | Lila - a Special Investigator |
| PPaul HurstBart - Jardine's Servant | Bart - Jardine's Servant |
 Arthur ShirleyWorth - Jardine's Neighbor | Worth - Jardine's Neighbor |
 Edward ClisbeeGerald - Jardine's Brother | Gerald - Jardine's Brother |
 Thomas G. LinghamNot listed | Not listed |
| WWilliam H. WestDr. Jardine - a Vivisectionist | Dr. Jardine - a Vivisectionist |
| FFrank JonassonNot listed | Not listed |