“She did for Sid”

“She did for Sid” is the graffiti that turns a public insult into a clue in the investigation of Sid Towers’s murder. Sprayed across the Walsingham Gallery window during a preview-party evening, the message appears to accuse Jessica of killing Sid; its eventual explanation reverses that implication, revealing the words as part of a deliberate attempt to direct suspicion elsewhere.

Appearance at the gallery

The message is discovered outside the Walsingham Gallery, in Northumberland Place, while Jessica’s guests are gathered inside. Jessica pushes through the party to the door, with Shirley-Ann Miller following apprehensively. Barnaby Shaw and A.J. are already standing at the window, looking at the writing. The large, crude white letters occupy the main window, making the accusation visible not only to the people summoned to inspect it but, Jessica realizes, to guests as they arrived.

Jessica’s first response is personal and immediate. She asks what kind of person could have done this to her, then describes herself as greeting her guests in innocence while the message was outside. Shirley-Ann is appalled on Jessica’s behalf and calls the act horrible; A.J. offers to clean it off. That removal is consequential: the accusation is erased from the glass, but it does not disappear from the investigation. Its witnesses preserve what the surface no longer shows.

A witnessed clue

Shirley-Ann later recounts the incident to Peter Diamond and Julie Hargreaves. Pressed to distinguish knowledge from intuition, she says she had not planned to mention what she knew, but then insists that these are facts: she saw the writing herself, and Jessica had practically dragged her into the street to look. Peter Diamond confirms the wording with her. Her account supplies the investigation with a direct witness to the message, not merely a rumor about it.

The detail that Barnaby Shaw cleaned the window also becomes important. When Peter Diamond raises the graffiti with Barnaby, Barnaby is rattled and asks who told him. A.J. reacts less dramatically, but Peter Diamond notes that he and Barnaby were among those who chose to remove the words without reporting the matter. The cleaning can initially look like a practical response to an offensive attack; in retrospect, it also explains why the investigators must rely on testimony rather than the surviving writing.

The message enters the inquiry as an uncertain clue. Julie Hargreaves identifies it as evidence that someone—probably Rupert Darby—believes Jessica is the killer, while Peter Diamond allows a more calculated possibility: the writer may want the police to believe that. The distinction changes the question. The graffiti need not reveal the writer’s sincere belief; it may instead be an accusation manufactured for its effect on whoever sees it.

The force of the accusation

The wording is brief, blunt, and apparently conclusive. “She” leaves the woman unnamed, while “for Sid” connects her to the dead man without explaining the circumstances. At the gallery, Jessica understands the message as directed at her, and the investigators consider whether someone is openly identifying her as Sid’s killer. Its public placement gives that accusation an audience before the police have established who wrote it or why.

That apparent certainty is precisely what makes the words useful as misdirection. The message seems to offer an answer, but Peter Diamond’s later reconstruction establishes that its answer is false: Jessica did not kill Sid. The sentence compresses suspicion into a memorable line, allowing the accusation to travel from the window into witness conversations and police reasoning even after it has been washed away. Its repeated recovery in testimony demonstrates how an erased message can remain active as evidence.

Staging and reversal

The final explanation links the graffiti to the conspiracy involving Barnaby Shaw and A.J. Peter Diamond tells John Wigfull that the killing was planned, not accidental, and that the graffiti incident was staged. The explanation also connects the staging to Rupert Darby: the conspirators ensured Rupert was “well sprayed first,” and the plan was to surprise him as he came out of his local. Peter Diamond identifies A.J. as the person who must have done that, noting that Rupert had never met him. The gallery message therefore belongs to a broader effort to manipulate appearances and place suspicion on someone outside the conspiracy.

John Wigfull asks why the conspirators would draw attention to their guilt with a message that appears to implicate Jessica. Peter Diamond’s answer turns the inscription inside out: “First, it wasn't true. She didn't do for Sid. A.J. did. Second, if anything went wrong, who would suspect that they wrote up the message themselves?” The accusation’s apparent risk is part of its cover. By making the message seem like an attack on Jessica, its authors could obscure their own involvement; by presenting it as a clue, they could encourage the investigation to follow the wrong implication.

The phrase thus changes meaning as the investigation advances. At first it is a public humiliation that Jessica wants removed; then it is a witnessed statement that Shirley-Ann can repeat; then it becomes evidence that may have been designed to mislead. Its force lies in the gap between its confident wording and its false claim. The erased letters survive as a narrative trace of how the killers attempted to control what others would believe about Sid’s death.