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Views from the Choir Loft

Msgr. Knox • “Ten Commandments” for Crime Stories

Jeff Ostrowski · November 29, 2017

3779 Ronald Arbuthnott Knox OME READERS will remember I’m currently serving on a committee to create the St. Jean de Brébeuf Hymnal, which is turning out to be a marvelous and unique collection. One book that comes up constantly in our research is the 1939 edition of the Westminster Hymnal, which is quite different than Terry’s 1912 edition. (Feel free to download the 1939 edition here.)

With the possible exception of Dom Andrew Gregory Murrary (d. 1992), the person exerting the greatest influence on the creation of the New Westminster Hymnal was Msgr. Ronald Knox (d. 1957).

I recently stumbled upon the “Decalogue for Writers of Detective Stories” by Msgr. Knox:

Ten Commandments of Detective Fiction :

1.

The criminal must be mentioned in the early part of the story, but must not be anyone whose thoughts the reader has been allowed to know.

2.

All supernatural or preternatural agencies are ruled out as a matter of course.

3.

Not more than one secret room or passage is allowable.

4.

No hitherto undiscovered poisons may be used, nor any appliance which will need a long scientific explanation at the end.

5.

No Chinaman must figure in the story.

(N.B. Google “mysterious Chinaman”—a cliché of the genre.)

6.

No accident must ever help the detective, nor must he ever have an unaccountable intuition which proves to be right.

7.

The detective himself must not commit the crime.

8.

The detective is bound to declare any clues which he may discover.

9.

The “sidekick” of the detective, the Watson, must not conceal from the reader any thoughts which pass through his mind: his intelligence must be slightly, but very slightly, below that of the average reader.

10.

Twin brothers, and doubles generally, must not appear unless we have been duly prepared for them.

Knox was a founding member of the DETECTION CLUB and wrote several works of detective fiction, including five novels. The Detection Club was formed in 1930 by a group of British mystery writers, including Agatha Christie, Dorothy Sayers, and Ronald Knox. The first president was G. K. Chesterton. In addition to meeting for dinners and helping each other with technical aspects in their individual writings, the members of the club agreed to adhere to a code of ethics in their writing to give the reader a fair chance at guessing the guilty party. These fair-play “rules” were summarized by one of the members, Ronald Knox, in an introduction to an anthology of detective stories. They were never intended as more than guidelines, and not all the members took them seriously. (These are the ten rules listed above.)

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

Filed Under: Articles Tagged With: Andrew Gregory Murray d 1992, Dom Gregory Murray, Monsignor Ronald Knox Traditional Mass Last Updated: January 1, 2020

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About Jeff Ostrowski

Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He resides with his wife and children in Michigan. —(Read full biography).

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President’s Corner

    Luis Martínez Must Go!
    Sevilla Cathedral (entry dated 13 December 1564): The chapter orders Luis Martínez, a cathedral chaplain, to stay away from the choirbook-stand when the rest of the singers gather around it to sing polyphony—the reason being that “he throws the others out of tune.” [Excerpt from “The Life of Father Francisco Guerrero.”]
    —Jeff Ostrowski
    Urgent! • We Desperately Need Funds!
    A few days ago, the president of Corpus Christi Watershed posted this urgent appeal for funds. Please help us make sure we’re never forced to place our content behind a paywall. We feel it’s crucial that 100% of our content remains free to everyone. We’re a tiny 501(c)3 public charity, entirely dependent upon the generosity of small donors. We have no endowment and no major donors. We run no advertisements and have no savings. We beg you to consider donating $4.00 per month. Thank you!
    —Jeff Ostrowski
    “Booklet of Eucharistic Hymns” (16 pages)
    I was asked to create a booklet for my parish to use during our CORPUS CHRISTI PROCESSION on 22 June 2025. Would you be willing to look over the DRAFT BOOKLET (16 pages) I came up with? I tried to include a variety of hymns: some have a refrain; some are in major, others in minor; some are metered, others are plainsong; some are in Spanish, some are in Latin, but most are in English. Normally, we’d use the Brébeuf Hymnal—but we can’t risk having our congregation carry those heavy books all over the city to various churches.
    —Jeff Ostrowski

Quick Thoughts

    Pope Pius XII Hymnal?
    Have you ever heard of the Pope Pius XII Hymnal? It’s a real book, published in the United States in 1959. Here’s a sample page so you can verify with your own eyes it existed.
    —Corpus Christi Watershed
    “Hybrid” Chant Notation?
    Over the years, many have tried to ‘simplify’ plainsong notation. The O’Fallon Propers attempted to simplify the notation—but ended up making matters worse. Dr. Karl Weinmann tried to do the same in the time of Pope Saint Pius X by replacing each porrectus. You can examine a specimen from his edition and see whether you agree he complicated matters. In particular, look at what he did with éxsules fílii Hévae.
    —Corpus Christi Watershed
    Antiphons Don’t Match?
    A reader wants to know why the Entrance and Communion antiphons in certain publications deviate from what’s prescribed by the GRADUALE ROMANUM published after Vatican II. Click here to read our answer. The short answer is: the Adalbert Propers were never intended to be sung. They were intended for private Masses only (or Masses without music). The “Graduale Parvum,” published by the John Henry Newman Institute of Liturgical Music in 2023, mostly uses the Adalbert Propers—but sometimes uses the GRADUALE text: e.g. Solemnity of Saints Peter and Paul (29 June).
    —Corpus Christi Watershed

Random Quote

Never before have men had so many time-saving devices. Yet, never before have they had so little free time. When the world unnecessarily accelerates, the Church must slow down.

— Archbishop Fulton J. Sheen

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Corpus Christi Watershed is a 501(c)3 public charity dedicated to exploring and embodying as our calling the relationship of religion, culture, and the arts. This non-profit organization employs the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.

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