Harriet Said... was the first novel written by Beryl Bainbridge, based on newspaper reports about the Parker–Hulme murder case in New Zealand which involved two young girls.

[1] Although completed in 1958[2] it was rejected by several publishers in the late fifties, and one of the rejections is quoted on the flyleaf of the first edition: The manuscript was thought lost but was found by one publisher, returned to the author[citation needed] and finally published by Duckworth in 1972, and by George Braziller in the US the following year.

It concerns two schoolgirls spending their holiday in an English coastal town.

The 13-year-old unnamed narrator develops a crush on an unhappily married middle-aged man, Peter Biggs, whom they nickname "the Tsar".

Led by pretty, malevolent Harriet, they study his relationship with his wife, planning to humiliate him.