NMLP P-000439 · True-first precedence · minted 2026-07-04

Sleeping Murder: Miss Marple's Last Case

Agatha Christie · William Collins (Crime Club) · 1976

Precedence is disputed. Most references treat the UK Collins Crime Club edition as the true first, but a US Dodd, Mead priority (September 1976, ahead of the UK October issue) is credibly reported. Priority cannot be asserted with certainty.

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New Mexico Literacy Project — True-first precedence NMLP P-000439 for "Sleeping Murder: Miss Marple's Last Case" by Agatha Christie (https://newmexicoliteracyproject.org/id/point/p-000439, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).