# The Assurance explained — The Charing Cross Mystery

> Chapter companion for The Charing Cross Mystery by J. S. Fletcher.

## What happens

Hetherwick and Rhona discuss the case and the motive for the murders, suspecting Baseverie and Ambrose sought both the ink formula and blackmail. A policeman summons them to Matherfield's office, where two chemists, Culthwaite and Houseover, confirm that Baseverie tried to sell them the formula for a new black ink, which they identify as Hannaford's invention. Rhona identifies her grandfather's handwriting on the formula. Hetherwick and Rhona share a tender moment, confirming their mutual affection.

## Themes in this chapter

### Greed and Materialism

The motive for the murders is revealed to be the desire to profit from Hannaford's ink formula and blackmail Lady Riversreade and Madame Listorelle.

### Blackmail and Crime

The blackmail plot against Lady Riversreade and Madame Listorelle is discussed as a secondary motive for the murders.

### Justice and Investigation

The investigation progresses with the discovery of the ink formula, providing a key piece of evidence against Baseverie.

## Character check-ins

### Mr. Hetherwick

Discusses the case with Rhona, accompanies her to Matherfield's office, and shares a romantic moment with her.

### Rhona Hannaford

Identifies her grandfather's handwriting on the ink formula, discusses the motives for the murder, and reciprocates Hetherwick's affection.

### Mr. Matherfield

Summons Hetherwick and Rhona to his office, introduces the chemists Culthwaite and Houseover, and reveals the discovery of the formula.

### Dr. Charles Ambrose

Mentioned as a suspect who, along with Baseverie, murdered Hannaford and Granett for the ink formula and blackmail.

### James Granett

Mentioned as a victim who paid the penalty for being with Hannaford.

### Superintendent Hannaford

His handwriting is identified on the ink formula; his murder is discussed as the central crime.

## Key lines

> I put it this way—always have done: they thought they could sell grandfather’s invention for a lot of money, and get another lot out of Lady Riversreade and Madame Listorelle as blackmail.

Rhona explains her theory that the murderers intended to profit both from selling the ink formula and from blackmailing the two women.

_Rhona summarizes the dual motive for the crimes._

> These gentlemen, Miss Hannaford and Mr. Hetherwick, are Messrs. Culthwaite and Houseover, manufacturing chemists, of East Ham—incidentally, they’ve also a big place in Lancashire.

Matherfield introduces the chemists who have come forward with evidence about the ink formula.

_The chemists provide the missing link in the case._

> That’s the formula for the ink! Now we’ve got the big thing we wanted!

Matherfield announces that the formula is the crucial piece of evidence they needed.

_The discovery of the formula is a major breakthrough._

> Did I kiss you? ... Why, of course, you did! Twice!

Hetherwick asks Rhona if he kissed her when they reunited, and she confirms it, teasing him.

_A romantic moment between Hetherwick and Rhona._

## Links

- HTML: https://www.betterreads.online/discover/the_charing_cross_mystery_se/chapters/xxvii-the-assurance
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- All chapters: https://www.betterreads.online/discover/the_charing_cross_mystery_se/chapters