Frankie Derwent’s feigned concussion

Frankie Derwent’s feigned concussion is a calculated performance that carries her into Merroway Court, the household she and Bobby Jones suspect may hold answers to the Marchbolt investigation. The staged accident lets her pass as an injured guest under a doctor’s care; once inside, however, she must negotiate the gap between her investigative purpose and the trust Sylvia Bassington-ffrench extends to her.

The plan and its purpose

Frankie devises the scheme because she wants to investigate Roger Bassington-ffrench at Merroway Court, where he lives with his brother and his brother’s wife. She has reconnoitred Staverley and concluded that an unfamiliar visitor staying in the village would attract notice. A contrived accident offers a way around that obstacle: Lady Frances Derwent will drive into a wall near the house gates, and the household will take her in as a casualty rather than question why she has arrived.

The plan depends on medical authority as well as social standing. Dr George Arbuthnot, a genuine doctor, is to be passing in a second car, take charge, and insist that Frankie be carried into the house for examination. His declared diagnosis will be that she has no broken bones but may have concussion, and must not be moved for two or three days. That enforced stay gives Frankie time to become familiar to the household. Her title, she argues, will make her presence seem respectable, while Roger’s prior acquaintance with Bobby makes Bobby a poor candidate to enter alongside her. Frankie therefore assigns Bobby no part in the household approach.

The deception grows out of uncertain evidence, not established knowledge of Roger’s guilt. Frankie and Bobby reason that Roger may have been the only person able to replace the photograph in the dead man’s pocket after Bobby saw it. Yet Bobby questions the theory: if the photograph mattered enough to endanger him, waiting until after the inquest would have been an implausible risk, and the police might have shown him the published image. He also doubts Roger was present when he returned the photograph. Their suspicion supplies Frankie’s motive for entering the house, but the doubts remain part of the case she is trying to test.

Staging the accident

At the roadside, Frankie asks whether she should roll in the road to get dusty. Dr George Arbuthnot agrees, takes her hat, and dents it to make the scene look more convincing. When a passing boy stops, George responds to his question about the accident with an ironic claim that Frankie drove into the wall on purpose. The boy takes the remark as sarcasm, not as a disclosure of the plan. His presence also establishes that the house is Merroway Court and that it belongs to Mr Bassington-ffrench, a justice of the peace.

Dr George Arbuthnot then performs the role the plan requires, identifying himself as a doctor and saying Frankie must be taken into the house. He tells Sylvia Bassington-ffrench that she will be all right, while maintaining the need for care. After going to the bedroom, he returns to Frankie and quickly tells her to claim she is a Christian Scientist. She agrees, although the evidence gives no fuller explanation of this additional instruction. The exchange shows that the performance is being improvised as well as planned: Dr George Arbuthnot has to manage the household’s expectations while Frankie sustains the identity that will keep her there.

Inside the household

Once settled in the house, Frankie thinks of herself as being in the enemy’s camp and understands that the next stage depends on her conduct. Sylvia treats her kindly, calling Dr George Arbuthnot capable and expressing relief that he happened to be passing. Frankie’s cover has worked, but its success produces discomfort. She recognizes that she has misled a woman who appears kind and unsuspecting, and wishes she did not have to continue the trick.

Frankie spends the first afternoon and evening in a darkened room, with Sylvia looking in on her briefly. The next day she admits daylight and asks for company. She and Sylvia discover mutual acquaintances and friends; by the end of the day, Frankie feels they have become friends. The relationship changes the moral texture of the deception: Sylvia is no longer merely part of the household Frankie needs to enter, but someone whose confidence makes the imposture feel meaner. Sylvia also speaks of her husband and her young son, Tommy Bassington-ffrench, and Frankie senses that she is not entirely happy, though she has not yet established why.

Investigation and limits of the disguise

The access gained through the act places Frankie close to the people she is investigating, but it does not settle the case. As she considers whether Roger is the culprit, she notes that Henry Bassington-ffrench receives supplies of morphia by post, which could have given Roger an opportunity to take some. This remains a possibility rather than proof. The disguise creates time and proximity for inquiry; it cannot by itself distinguish a clue from a suspicion.

Later, Frankie’s doubts widen beyond Roger. She considers whether Sylvia might also have been involved in Henry’s death, citing Sylvia’s resistance to sending her husband elsewhere rather than to the Grange and her presence in the house when the shot was fired. These are questions Frankie raises while trying to make conflicting appearances fit, not conclusions established by the feigned concussion. Still later, as she and Bobby continue examining the wider mystery, Frankie asks why Mrs Templeton called a gardener to witness John Savage’s will when the house parlourmaid was present. Bobby answers that the maid was Evans. That discovery belongs to the continuing investigation, not to the mechanics of Frankie’s cover, and underlines how the operation at Merroway Court forms only one stage of a case built from accumulating, revisable clues.