Latest instalment of Fifty Shades of Grey already on best-seller lists
Fifty Shades Of Grey fans who rushed to get their hands on the latest erotic novel in the series have already made it a best-seller.
Grey is EL James' newest creation, and it tells the racy love story from title character Christian Grey's point of view.
It's not clear if Northern Ireland actor Jamie Dornan, who starred in the first three tales in the series as Grey - as well as a serial killer in The Fall TV series - will appear in the latest sado-masochistic spin-off.
It went on pre-sale at the start of June, when the author revealed she was set to pen another of the housewives' favourites.
Readers who eagerly ordered the latest book in advance found it available to download from the stroke of midnight.
The new book will be in shops today, but is already among Amazon's eBook best-sellers.
It made headlines last week ahead of its publication when it was reported that a finished draft had been stolen.
Its author is in New York on publication day as part of an international publicity campaign for the book, which is already a guaranteed best-seller.
The trilogy - Fifty Shades Of Grey, Fifty Shades Darker, and Fifty Shades Freed, has sold more than 125 million copies worldwide.
The fantasy novels, which were swiftly signed up to appear on the big screen, have brought James massive wealth.
The Sunday Times Rich List estimated she is now worth around £75m.
It also brought global success to Holywood actor Dornan, who shot to worldwide fame in the adaptation of the first novel.
The actor and his co-star Dakota Johnson, who appeared as Anastasia Steele, are signed up for the next movie in the trilogy, but there is no word as to whether they will appear in the latest incarnation in the series.
EL James claims she wrote Grey in response to demands from fans, and on the opening page she says it is "dedicated to those readers who asked... and asked... and asked... and asked for this".
Grey also attracted the attention of the police, over those claims that a copy of the unpublished novel had been stolen.
Detectives say there is no evidence a crime was committed.
A spokeswoman for Kent Police said: "Following a report that one book had been stolen after packaging was found to be damaged, there is no evidence at this stage to suggest that an offence has been committed.
"No more action will be taken unless further information is received."
A spokeswoman for publisher Penguin Randomhouse said: "We are delighted that the book's theft does not appear to have been for any malicious intent or financial gain.
"We can however confirm that we will continue our investigations into this matter and that we will be reporting any findings to Kent police.
"We're hugely excited to be publishing Grey by EL James."