I first heard of Annie Haynes on The Passing Tramp. Shortly after Martin Edwards also wrote about her on ‘Do You Write Under Your Own Name?’. Other bloggers I regularly follow have written reviews of her books, but it was only yesterday, after reading Narrating Female Experience through Genre Hybridity in the Novels of Annie Haynes at crossexaminingcrime, that I started to become interested in her oeuvre. As it is my custom, I began to search about her life on the Internet, and much to my surprise I found there’s very little known about her. Oddly enough there`s no Wikipedia entry on Annie Haynes in English, though she does have a Wikipedia entry in Spanish. There I could find out the following (my free translation):
Annie Haynes
Annie Haynes (1865-1929) was a British writer of mystery novels.
Biography
Annie Haynes was born in Ashby-de-la-Zouch, Leicestershire, United Kingdom, in 1865 and very little is known of her life. After abandonment by her father, Annie family moved to Beaumont farmhouse, Coleorton Hall (in Coalville, Webster County). In 1908, she moved to London to embark on her literary career after making contacts with Ada Heather-Bigg, a feminist leader of the time. Interested in crafting crime and detective novels, Annie Haynes would often visit murder scenes or attend murder trials to get first information about killers and their victims. She published her standalone novel The Bungalow Mystery in 1923. She wrote at least twelve books and the last in Inspector Stoddart mystery series, The Crystal Beads Murder was published posthumously, and it’s suspected that Dorothy L. Sayers or Agatha Christie completed it. With a painful degenerative illness since 1914, she would die in 1929.
Who Completed Annie Haynes’ The Crystal Beads Murder? First Suspect: Agatha Christie
Works
Series
Inspector Furnival Mysteries Books
The Abbey Court Murder (1923)
The House in Charlton Crescent (1926) [Spanish title: Asesinato en Charlton Crescent. — Morcín (Asturias): Editorial dÉpoca, 2017]
The Crow’s Inn Tragedy (1927)
Inspector Stoddart Mysteries Books
The Man with the Dark Beard (1928)
The Crime at Tattenham Corner (1929)
Who Killed Charmian Karslake? (1929) [Spanish title: ¿Quién mató a Charmian Karslake? Sherlock Editores, 2018]
The Crystal Beads Murder (1930) See review at I Prefer Reading and at Beneath the Stains of Time.
Other Novels
The Bungalow Mystery (1923)
The Secret of Greylands (1924)
The Blue Diamond (1925)
The Witness on the Roof (1925)
The Master of the Priory (1927)
Bibliography
Barasorda, Juan Mari: «Annie Haynes la dama misteriosa del crimen». En: Asesinato en Charlton Crescent / Annie Haynes. Morcín (Asturias): Editorial dÉpoca, 2017.
External Links
See a complete book list at Fantastic Fiction.
Besides Kate Jackson @ArmchairSleuth at her blog crossexaminingcrime and Curtis Evans @thepassingtramp at his blog The Passing Tramp have reviewed most of Annie Haynes books, if not all.
I might read first The Abbey Court Murder (1923). Annie Haynes and Her Golden Age Detective Fiction, by Curtis Evans. Stay tuned.
A Crime is Afoot 
Thanks the mention and I look forward to reading your thoughts on Haynes’ work.
In which order do you recommend to read them?
They don’t need to be read in order. The strongest novel is The Crime at Tattenham Corner, in my opinion, so you might like to start there.