Instruct: Classify the given review as either positive or negative.
Query: Top of the genre.

An example of Marsh at her best (although not in the top 5, hence the 4 star rating) it contains every element that's wonderful about the Inspector Alleyn series.Originally published in 1939, OTD is set in a town run roughshod over by a pair of bloody-minded spinsters. When one of them is killed in a particularly fitting way, it's all to easy to find someone who'd be willing to kill both. Alleyn has to sort the prejudice from the truth to catch a killer in this remarkable classic mystery.