The Penny Black riddle campaign

The Penny Black riddle campaign is a planned sequence of clues built around the theft and return of the Penny Black. It makes the crime more than a question of who took the stamp: the thief arranges for investigators and the Bloodhounds to encounter rhymes whose apparent cleverness is complicated by their timing. A later verse renews the challenge, but the available evidence leaves its solution open.

Planning and sequence

John Wigfull reconstructs the campaign by shifting attention away from the Monday evening events that had dominated inquiries into the narrowboat. The theft itself, he argues, took place the previous week. On Thursday, police received an erroneous tip-off from Bristol; on Friday came the first rhyming riddle, and the stamp was stolen that same morning. The sequence links advance misdirection, a public puzzle, and the theft rather than treating them as separate incidents.

In Wigfull’s account, the tip-off to Sergeant Plant, the riddles, the theft at the Postal Museum, and the planting of the stamp in Milo Motion’s book are parts of one design. He presents the operation as intricately plotted and high-risk, with the thief intending to return the stamp after making fools of both the police and the Bloodhounds. This is Wigfull’s reconstruction of the plan, not a claim that the earlier inquiries had already recognized its shape: most attention had gone to who could visit the narrowboat and why, while the decisive theft had happened days before.

The first clues and hindsight

The campaign’s earlier riddle leads to a gap between a clue’s apparent clarity and its usefulness before the event. Peter Diamond concedes that Wigfull’s deduction makes sense, but argues that the investigators had no realistic chance of anticipating that the stamp would turn up in chapter seventeen of an obscure book written sixty years earlier. In his view, the rhyme becomes easy to work out only retrospectively. Its destination is therefore part of the trick: the solution can look neat once the stamp has appeared, without having offered the police a workable prediction beforehand.

When Peter Diamond asks for the first two lines, Julie Hargreaves recalls, “Whither Victoria and with whom-The Grand Old Queen?” Wigfull insists that the final two lines contained the puzzle. The exchange shows the investigators testing not just an answer but the construction of the clue: a conspicuous opening can attract attention while the operative information lies elsewhere. At the same time, their disagreement exposes the campaign’s unfair-seeming advantage. The poem is legible after the stamp’s appearance, but that does not mean the investigators could have used it to prevent or locate the theft in advance.

The third riddle

After a new message arrives, the heading “The Third Riddle” introduces a fresh stage in the campaign. Its verse reads: “To end the suspense, as yours truly did, / Discover the way to Sydney from Sid.” The closing couplet shifts the challenge from the earlier reference to Victoria toward a wordplay connection between Sid and Sydney. Peter Diamond’s immediate question about Sydney signals that the place-name is now the point demanding explanation; the passage supplied here does not establish the eventual solution.

The new verse is sent first to the local media, as the earlier messages had been. Arnold Musgrave says its typeface is the same and that he is fairly sure the paper is too, supporting the judgment that it comes from the same source. The repeated delivery method and material presentation make the third message a continuation of the campaign rather than an unrelated communication. Its wording also sounds more direct to the investigators: Wigfull reads “To end the suspense” as an indication that the writer wants the solution found.

Wigfull proposes that the author may want recognition after committing a masterly crime and receiving none for the clever rhymes. He treats the wish to be unmasked as a possible motive, not a confirmed explanation. The distinction matters: the verse can be read simultaneously as a clue and as an apparent invitation, while its author’s intention remains uncertain in this exchange.

The campaign’s effect

The riddles make the investigation a contest over knowledge and timing. The thief’s advantage, as Peter Diamond describes it, is not simply concealment but the ability to make a clue look obvious only after the event it explains. The campaign’s linked stages—misleading information, verse, theft, and the planted stamp—turn the police response into part of the spectacle the plan is said to seek.

The third riddle renews that contest by promising an end to suspense while withholding the connection its words demand the investigators discover. Its circulation through local media broadens the audience for the challenge, and the matching typeface and likely matching paper tie it back to the earlier messages. Yet the surviving exchange stops at interpretation: the source appears continuous, Wigfull offers a theory of the writer’s desire for glory, and the meaning of the route from Sid to Sydney remains unresolved here.