The Door with Seven Locks · Chapter
IV explained
Mr.
What happens
Mr. Havelock hires Dick Martin to find the missing Lord Selford (who travels as John Pierce), revealing the troubled history of the Selford family. Dick later visits Sybil Lansdown at the library, where she deduces his mission and reveals her own distant relation to Selford. Returning home, Dick discovers the body of Lew Pheeney in his bureau.
Free preview opens on this chapter — companions, themes, and character notes appear beside the text.
Narrative arc
Story tension across the book — this chapter sits in Exposition.
- Setup
- Escalation
- Breaking point
- Aftermath
- Closing
The emotional and psychological peak occurs when the discovery of the key—the twin to the one locked in the ba…
Full beat labels and climax notes unlock in the reader.
Follow the arc while readingThemes in this chapter
- Secrecy and Deception
Havelock's covert mission to find Lord Selford without revealing his involvement; Sybil's ironic deduction of Dick's true purpose.
- Crime and Detection
Dick's investigation into Lew Pheeney's midnight activities and the subsequent discovery of his murder.
- Class and Morality
The troubled Selford family history, with themes of inherited madness and the moral decay of the aristocracy.
Characters to notice
- Mr. Havelock
Hires Dick to locate Lord Selford; reveals his role as trustee and the family's troubled history.
- Dick Martin
Accepts the assignment to find Lord Selford; later finds Lew Pheeney dead in his flat.
- Sybil Lansdown
Meets Dick at the library; deduces his mission and reveals her distant relation to Lord Selford.
- Inspector Sneed
Orders a search for Lew Pheeney after hearing Dick's account; takes the matter seriously.
- Lew Pheeney
Visits Dick in fear, claiming he was chased; later found dead in Dick's bureau.
Key passages
“I’m the trustee of the Selford estate, and I wish to heaven I wasn’t.”
Havelock expresses regret over his role as trustee of the Selford estate.
Highlights Havelock's burden and the troubled nature of the Selford family.
“You are certainly the naivest detective I have ever met!”
Sybil playfully mocks Dick for his transparent attempts to interest her in his affairs.
Shows Sybil's sharp wit and her awareness of Dick's intentions.
“It was Lew Pheeney, and he was dead.”
Dick discovers the body of Lew Pheeney in his bureau.
Climactic moment marking the murder and escalating the mystery.
