Tom Hartigan

Tom Hartigan is the young man who reports his suspicions about Alexander Bonaparte Cust to Inspector Crome, supplying a lead that makes a direct interview with Cust seem warranted. His account is tentative rather than conclusive: he pieces together a dropped ticket, disputed recollections of travel, and Cust’s possible presence near earlier murders, while acknowledging that the apparently harmless lodger might simply be eccentric.

Identity and Circumstances

Hartigan has a young lady, Lily Marbury, whose mother lets rooms in Camden Town. For more than a year, Cust has rented their second-floor back room. Hartigan describes him as middle-aged, vague, soft, and apparently diminished in circumstances—a man who, at first glance, would not hurt a fly. That ordinary domestic arrangement gives Hartigan access to information about Cust’s movements, but does not itself establish wrongdoing.

The Suspicion Takes Shape

Hartigan’s concern arises from an encounter with Cust at Euston Station and a ticket that Cust dropped. When Hartigan later recounts the episode to Crome, he does so in a confused, repetitive manner, reflecting how uncertainly he has assembled its significance. The ticket and the encounter become clues only when set beside what Lily and her mother remember about Cust’s travel.

Lily was sure Cust had said he was going to Cheltenham, and her mother remembered discussing the destination on the morning he left. Hartigan had paid little attention at the time. The apparent discrepancy acquired weight after Lily wondered aloud whether Cust might be caught up in the A B C affair while travelling to Doncaster. She also recalled that he had been in the Churston area around the time of the preceding crime, and that on an earlier occasion he had been away at the seaside, though she did not know where.

Reporting Cust to Inspector Crome

Hartigan explains that he and Lily initially treated the coincidences lightly. He had nevertheless continued to wonder privately whether Cust, harmless-seeming as he appeared, might be “a bit batty.” When he brings the matter to Crome, he worries that he may be making much of nothing and flushes slightly. Crome reassures him that he was right to come forward, while carefully distinguishing a lead from proof: the dates could be coincidence, and the resemblance in the name might mean nothing.

Crome’s response gives Hartigan’s report a concrete consequence. Though he calls the evidence slight, he says it warrants interviewing Cust and asks whether the lodger is home. Hartigan answers that he is. His contribution is therefore not an accusation established by evidence, but the information that prompts the investigator to seek Cust directly.

Narrative Role

Hartigan’s account turns scattered domestic recollections into an investigative lead. Its force lies in its limitations as much as in its details: uncertain dates, second-hand memories, and a dropped ticket invite scrutiny without settling Cust’s guilt. Against Crome’s demand for facts, Hartigan offers an imperfect but consequential chain of observation—the kind of small connection that can redirect an inquiry.