The Doctor Blake Mysteries

Two sisters are discovered dead from gas poisoning in their house; one is a gifted writer, the other harbours a dark secret. When only one of them survives the incident, investigators suspect foul play. The surviving sister's account raises doubts about an accident, prompting police to treat the case as potential homicide.

"All She Leaves Behind" is an episode‑length programme that centres on a disturbing domestic incident. The title itself signals that the story will focus on what remains after a tragedy, and the format is presented as a self‑contained episode rather than a longer series. The narrative opens with the discovery of two sisters inside their house, both victims of a gas leak. One of the women is portrayed as a gifted writer, while the other harbours a dark secret that is hinted at but never fully disclosed. When emergency services arrive, only one sister is still alive, prompting the authorities to consider the possibility of foul play rather than a simple accident. The survival of a single sibling under these circumstances raises immediate questions about the circumstances surrounding the gas exposure. The contrast between the author's public talent and her sister's concealed secret adds a layer of intrigue, while the suspicion of deliberate wrongdoing drives the episode’s tension. The story therefore hinges on uncovering what, if anything, was done to cause the tragedy and why only one sister managed to survive.