Sebastian

Sebastian is Dominic Cavendish’s brother, distinguished in the novel by an easy charm that sits alongside practical resolve. He welcomes Isobel Davenport into the family, helps investigate Rupert Davenport and Bertram DeLisle, and becomes an active defender when the pursuit of evidence turns into an armed confrontation. His role moves between convivial younger brother, investigator and decisive ally: he is as ready to tease Dominic as he is to put himself between Isobel and danger.

Identity and Introduction

Sebastian arrives at Havistock with Dominic’s other brother, Edward. The brothers’ arrival is lively: both tease Dominic about his impatience to marry Isobel, and Isobel finds Sebastian and Edward charming. They are described together as tall, exceptionally handsome and good-natured, with an effortless charisma that makes them easy to like. Sebastian’s first impression is therefore not that of a solemn enforcer. The family’s humour and warmth establish him as part of the new household Isobel is joining, even as her marriage does not make the danger from Rupert disappear.

That contrast becomes important to his part in the story. Sebastian’s good humour does not mean passivity. As the threat persists, he accepts practical assignments, takes part in the work of building a case, and responds quickly when violence breaks into the household. The text gives him no separate history or independent domestic arc; it defines him chiefly through his bond with Dominic and his conduct in the family’s collective effort to protect Isobel.

From Family Welcome to Investigation

After Isobel’s wedding, she remains conscious that Rupert may still be waiting to harm her. Dominic and Sebastian leave to question villagers about Rupert’s possible whereabouts, including whether he is still staying on the other side of the village. Their inquiry reflects the immediate uncertainty surrounding the threat: the family cannot assume that Rupert has vanished, and Dominic seeks information about where he might be found.

Sebastian later undertakes a broader assignment. He plans to go to London to gather support and investigate the activities and financial position of both Rupert and DeLisle. The proposed journey widens the inquiry beyond the search for Rupert’s location. It is also an effort to establish what the two men have been doing and what evidence their financial dealings may provide. Isobel, meanwhile, worries that the men’s preparations leave her out; Sebastian’s assignment is one part of a family operation in which different members take on distinct tasks.

When the men review what has been learned, Sebastian says that the evidence against Rupert is mounting and asks whether there is news about the men who attacked Dominic. The question links the legal investigation to the immediate physical danger. Dominic reports that the attackers came from London and suspects they were employed by DeLisle, since Rupert lacks the funds to pay them. Sebastian’s question is not merely a request for another lead: it helps the men assess whether the violence against Dominic belongs to the same network they are investigating.

Evidence Against Rupert and DeLisle

Sebastian plays a prominent part in setting out the evidence against DeLisle. He recounts witness statements, financial records of debts to loan sharks and gaming houses, and the testimony of two serving staff who saw DeLisle push his third wife down the stairs. The accusation initially seems so grave that Isobel nearly misses its significance as Sebastian delivers it in a conversational manner. His calm presentation makes the evidence’s force sharper, rather than diminishing it: the details are not rumor alone but statements and records that can support formal action.

Sebastian also announces that there is an arrest warrant for DeLisle for the murder of Harriett Barnstable, his last wife. DeLisle denies the accusation and demands that it be withdrawn, but Sebastian refuses. In this exchange he serves as the voice of a case that has moved beyond suspicion: the evidence has consequences, and the warrant makes the accusation actionable. His earlier plan to investigate the men’s activities and finances thus belongs to a wider effort to connect their conduct to charges that can be pursued.

Defending Isobel During the Confrontation

When the confrontation turns dangerous, Sebastian’s role shifts from reporting evidence to physical protection. Rupert’s hold on Isobel makes the threat immediate. Sebastian stands in front of her protectively and warns Rupert not to approach her again, making clear that he will use force if necessary. His intervention supports Isobel’s own resistance: she shoves Rupert, while Edward and Sebastian move to protect her from a further lunge. The family’s defense is coordinated, but Sebastian’s threat is personal and direct.

Dominic calls for Edward, who returns with DeLisle, while Rupert still holds Isobel at knifepoint. A gunshot outside briefly distracts Rupert. Sebastian uses that opening to seize Isobel around the waist and throw her over the back of the chaise lounge, away from Rupert’s immediate reach. The rescue is abrupt and forceful, and Isobel lands on the floor beside him. Sebastian is left holding Rupert’s knife in a shaking hand, evidence of the danger and strain of the moment; he then places the weapon out of Rupert’s reach. His actions help break the hostage situation and give Dominic the opportunity to confront Rupert.

Family Loyalty and Aftermath

Sebastian’s loyalty also appears in his concern for Dominic. He understands that Dominic’s possessive protectiveness comes from his fear for Isobel and sympathizes with the distress behind it. That understanding does not make Sebastian merely an observer: during the crisis he helps remove Isobel from danger, then remains attentive to what the family needs next. When Dominic tries to follow Isobel upstairs after she has been wounded and has fainted, Sebastian restrains him long enough to explain that she is being settled in bed while they wait for the doctor. He trusts Mrs Holcombe to tend to her and directs Dominic toward the immediate practical reality of her care.

Across these scenes Sebastian helps turn family solidarity into action. He welcomes Isobel, investigates the threat, presents evidence with consequences for DeLisle, and protects her when Rupert’s violence becomes immediate. The novel does not give him a solitary victory or a resolution separate from the others; his significance lies in how reliably he contributes to the shared defense of the household. Warmth, inquiry and force are not separate sides of his characterization but successive forms of the same allegiance.