This Night's Foul Work is a 2008 crime-novel by French author Fred Vargas, an entry in her Commissaire Adamsberg series.

[2] This Night's Foul Work marks the first time Random House have published one of her novels in hardcover.

The title comes from a line of impromptu verse spoken by one of the characters.

[citation needed] The book received mixed reviews.

Kirkus Reviews gave a negative review of the book, writing that it was "sub-par performance", while Publishers Weekly praised it, calling it "outstanding.