| Director | Charles Saunders |
|---|---|
| Country | United Kingdom |
Dr. John Winnington and Sophie have an unhappy marriage, and John falls in love with his new laboratory assistant, Sophie's sister Christine. Sophie agrees to a divorce and announces her intention to leave for South Africa. Feeling unwell on the day of her departure, John gives her a stimulant, but she is run down by a lorry. When poison is found in her body, John is accused of murder.