Murder Must Advertise

The eighth novel in Dorothy L. Sayers's Lord Peter Wimsey mystery series is set in the offices of Pym's Publicity, a London advertising agency, during the early 1930s. Aristocratic amateur detective Lord Peter Wimsey goes undercover to investigate a suspicious death, only to uncover a drug-trafficking operation hidden within the advertising industry.

A new copywriter named Death Bredon arrives at Pym's Publicity and takes over the room of Victor Dean, a young colleague who recently fell down the office's iron spiral staircase and died. Bredon projects amiable incompetence but privately studies the coroner's inquest report. The testimony troubles him: Witnesses describe Dean crumpling forward suddenly, making no attempt to save himself, gripping a heavy atlas so tightly it had to be pried from his hands. The attending doctor found no trace of illness or intoxication. Among Dean's papers, Bredon finds an unfinished letter to Mr. Pym, the firm's owner, warning that "there is something going on in the office which is very undesirable." He also discovers a cryptic list of dates, all Tuesdays, each paired with a letter of the alphabet.

Through conversations with colleagues, Bredon learns that Dean was unpopular for stealing others' ideas, that he associated with a reckless social set led by a woman named Dian de Momerie, and that a fellow copywriter named Willis, who is in love with Dean's sister, Pamela, harbors intense hostility toward anyone connected with Dean. Bredon eventually meets Mr. Pym for a routine new-employee interview, drops his naive act, and privately briefs the Managing Director in a serious tone, leaving Pym visibly shaken.

The narrative reveals that "Death Bredon" is Lord Peter Wimsey, the younger brother of the Duke of Denver, working undercover. At the flat of his brother-in-law, Chief-Inspector Charles Parker of Scotland Yard, Wimsey explains his theory: Someone on the roof used a catapult, a Y-shaped slingshot, to fire a projectile through the open skylight above the staircase, striking Dean on the temple as he descended. A smooth pebble found at the staircase's foot days before the death was likely a practice shot, and Dean's onyx scarab charm was found in the same spot on the day he died, freshly chipped. Parker notes that his team has been trying to crack a cocaine distribution network flooding London, and they agree to coordinate their investigations.

To test his theory and provoke a reaction, Bredon openly tells colleagues he has been shooting sparrows on the roof with a catapult. He retrieves a catapult confiscated from Ginger Joe, a sharp office boy of fourteen, and enlists Ginger as his confidential assistant. Using fingerprint powder, they discover the catapult has been completely wiped clean, proving someone borrowed it, used it, and removed all traces. Bredon asks Ginger to investigate staff alibis for the time of Dean's death.

The catapult talk provokes a violent response. Late one night, someone disables the staircase light at the building where Wimsey has a registered address under the name "Bredon" and attacks Parker, breaking his collarbone. The assailant steals a letter from the "Bredon" letter-box and flees when Parker's wife, Lady Mary, Wimsey's sister, raises the alarm. A promotional pencil from a brand handled only by Pym's confirms the attacker came from the office.

Wimsey pursues a second front by adopting the persona of a masked Harlequin to infiltrate Dian de Momerie's circle. At a wild party hosted by Major Milligan, a sinister figure connected to the drug trade, Wimsey captivates Dian with a reckless dive from a fountain statue. In subsequent encounters, Dian reveals that Milligan distributes drugs at his parties, that he told her to cultivate Dean and then abruptly ordered her to drop him, and that Milligan fears the people above him in the drug organization.

At Pym's, a dramatic office crisis provides a vital clue. The elderly Mr. Copley works late one Thursday and must substitute a new headline for the next day's Nutrax nerve-tonic advertisement when the original, combined with its sketch, proves inadvertently indecent. While searching group-manager Mr. Tallboy's desk for the proof, Copley finds fifty pounds in cash. The resulting confrontation between Copley and Tallboy splits the office into hostile factions. Meanwhile, a junior reporter named Hector Puncheon accidentally receives a packet of cocaine at the White Swan pub in Covent Garden, mistaken for a regular courier. Police surveillance of the pub yields nothing because, as Wimsey later deduces, the distribution point changes every week.

Wimsey meets Milligan privately as "Bredon," having established the fiction that Bredon is Lord Peter Wimsey's disreputable cousin. Milligan reveals that the entire drug operation is run from inside Pym's and that Dean had been trying to discover who controlled it. They agree to cooperate, each planning to double-cross the other.

The breakthrough comes when a fake Post Office delivery retrieves marked telephone directories from the flat of a suspected drug courier named Mountjoy, who is later killed at South Kensington Underground station in what appears to be a deliberate push. A recovered directory reveals London pubs ticked off in alphabetical sequence. Visiting Parker's family, Wimsey hears the phrase "Tears, idle Tears" and realizes it matches a Nutrax headline beginning with "T"; on that same Tuesday, Tallboy addressed a letter to "T. Smith, Esq." at a tobacconist's shop. Wimsey confirms the complete system: Each week, the initial letter of the Nutrax headline, decided on Tuesday, determines both the coded letter Tallboy sends and the next pub in the alphabetical sequence where drugs are distributed on Friday. The distribution point never repeats, explaining why Parker's surveillance always failed.

Wimsey visits the tobacconist's shop undisguised and inadvertently tips off the gang by mentioning Milligan's name. That same afternoon, Milligan is killed by a lorry in Piccadilly, an obviously arranged "accident."

Events climax at a cricket match between Pym's and a rival firm. With his team collapsing, Bredon abandons his cautious mediocrity and bats with brilliant skill, winning the match. The elderly Mr. Brotherhood recognizes his style from Oxford cricket: "Aren't you Wimsey of Balliol?" Before the question can develop, police arrive and arrest "Death Bredon" for the murder of Dian de Momerie, whose body has been found with her throat cut. The arrest is a deception: The drug gang killed Dian to frame Bredon and remove him from Pym's. Wimsey stages a dramatic escape from Scotland Yard, then reappears publicly as Lord Peter Wimsey to arrange his "cousin's" defense. The Sunday papers publish photographs of both men side by side, cementing the fiction that they are two different people.

On the evening of the drug raid, Tallboy arrives at Wimsey's flat and confesses. Two years earlier, a stranger recruited him to send coded letters revealing the Nutrax headline initial each week, paying him generously and claiming the letters were used for betting. When Dean discovered the arrangement and began blackmailing him, Tallboy learned the letters actually funded drug trafficking. Desperate, he killed Dean by telephoning him with a false summons to the spiral staircase, stealing his scarab, going up to the roof, and shooting him through the skylight with the catapult. Tallboy begs to shield his wife and child from scandal. Wimsey offers one grim option: "Go home now. Go on foot, and not too fast. And don't look behind you." Tallboy understands that the gang's watcher, still posted outside, will follow and kill him. He accepts and walks into the night.

Parker reports that the raid on the designated pub was completely successful: The drug shipment was intercepted, all distributors arrested, and the tobacconist Cummings, the actual head of the operation, confessed. The code system is fully confirmed: Distributors identified themselves at each week's pub by mentioning Nutrax or carrying something related to it, explaining how Puncheon accidentally received cocaine. The office learns that Tallboy was "knocked down and killed on his way home," his death appearing as a street accident. His family is spared any knowledge of his crimes. Willis announces his engagement to Pamela Dean, and Miss Rossiter, one of the office typists, collects for both a wreath and a wedding present. Wimsey bids farewell to Ginger Joe and steps into Southampton Row, where enormous posters for his own Whifflets advertising campaign blaze across the hoardings. Two passersby stop, read the ad, and decide to buy a packet, a final testament to the power of advertising as Wimsey walks away from it.