Inspector Crome’s Confidence
The A.B.C. MurdersThis thread follows Crome’s self-assured approach as the ABC case frustrates his expectations and forces him to rely on Poirot’s insight.
increasing
Bearing strength in each event
decreasing
A Modern Expert

A Young Inspector
A record of success
Crome takes pride in solving a difficult child-murder case and in using modern investigative techniques. He assumes his expertise applies to the new series.
Patronizing authority
He speaks to Poirot as though the older detective belongs to a less advanced era. The rivalry begins in manner before it begins in results.
A Theory of Publicity

Confidence in Psychology
A compelling profile
Crome believes the killer seeks notoriety and will become careless through overconfidence. The theory is plausible and receives Dr Thompson’s support.
A partial explanation
The theory describes how a serial killer might behave but does not explain why Franklin needs the murders. Crome mistakes a cover story for the motive.
The Net Tightens

Procedures and Leads
Extensive preparation
Crome coordinates police warnings, searches, and witnesses in Doncaster. The scale of the operation reflects his belief that the killer can be caught by comprehensive surveillance.
A tangible suspect
The stocking evidence leads him to Cust, whose room contains guides and the knife. Crome sees a solved case where Poirot sees unresolved contradictions.
A Convenient Conclusion

Evidence Without Motive
A strong prosecution file
Crome assembles clothing, typewriter, railway guides, and the murder weapon. The evidence appears to make Cust’s guilt undeniable.
An unanswered question
Poirot continues to ask why Cust would write to him and why his personality seems divided. Crome’s confidence cannot settle the deeper mystery.
The Expert Corrected

A Different Kind of Solution
The mastermind named
Poirot reveals that Franklin Clarke used Cust as a decoy. Crome’s evidence remains valuable but had led him to the wrong level of responsibility.
Method and meaning
The case demonstrates that collecting clues cannot replace interpreting motive. Crome’s professional path is challenged, not erased, by Poirot’s conclusion.
July 25, 1935, en route to Bexhill
After the Bexhill murder
September 11, 1935
After Cust’s arrest
Near the ending