If you've been following me on Twitter or Facebook, you might know that over the last few weeks I've had a monster bee in my bonnet about the best-selling British novelist Stephen Leather on account of several unethical practices he is fond of using.

This was triggered by Leather's remarkable boast at the Harrogate crime festival that he has set up a 'network' of fake identities online to promote his own work, and also relies on friends and friends of friends to do the same, using their real names or assuming others' to help him out with this. I did some digging, and soon found out quite a lot more besides, and asked Mr Leather about what I had found on Twitter. He was very aggressive, refused to answer most of my questions, and flat-out lied in response to some of them, before blocking me and going on to make veiled legal threats against me. Today I discover I have been suspended from Twitter (I'm trying to find out why right now), and at the same time Stephen Leather has finally responded, in the comments at this excellent blog post (which sets out a lot of the background and links to some of my findings). Here is my reply:

Leather: 'The problem is that I have been advised to say nothing.

But it is just so darn unfair that blogs like this have repeated allegations as fact without making any effort to check whether they are true or not. Ditto all those who pile in to comment on the allegations. It really is a mob mentality and is unfortunately not uncommon on the internet these days.'

Mr Leather, I've made every effort to check what I have discovered. I tweeted directly to you on Twitter from the beginning, asking you to answer questions about your sockpuppeting accounts. You were immediately aggressive, refused to answer my questions, lied, became personally abusive and then blocked me. You flatly denied that you were operating a Twitter account, @firstparagraph, claiming it was another writer who was a great fan of yours. You eventually changed the name of the account to @thirdparagraph and added a line in the profile admitting it is you, but you have shamelessly continued to use the account to talk about yourself in the third person as some sort of genius, and to relentlessly promote your books. You tweeted from that account earlier today: 'I just found a awesome free short story', followed by a link to one of your own stories on Amazon. You just found it, did you? Here are some other tweets you have made from the @thirdparagraph Twitter account:

'I really wish that I was as terrific a storyteller as Stephen Leather. He's way better than Vince Flynn'

'The book I would take with me on a desert island? No brainer. Soft Target by Stephen Leather. http://www.stephenleather.com'

'My favourite writer? Stephen Leather. http://www.stephenleather.com  I love his books. Stephen you rock!'

Just so we're clear: this is you tweeting about yourself in the third person. You denied you were doing it, pretending it was a fan of yours, but have now finally admitted it - and yet are still doing it.

'Pretty much all the allegations that Duns is making are untrue.'

Those modifiers don't inspire a great deal of confidence! Which allegations I have made are untrue and which ones are true, precisely? You say later that my allegations are unsubstantiated, but in fact I’ve substantiated them all. By your own admission, you use fake identities to promote your own work, which is not just unethical, but fraudulent: it's illegal in the UK. You make sick jokes on Amazon (that comment links to your own verified account). You set up two fake identities in the name of another writer – he told me this himself and I have recorded the conversation. You have posted racist abuse online – there are many elements of the posts that prove they were made by you, not least the poster’s knowledge of your address (you should be annoyed with them, surely, if they aren’t you!). By your own admission you have spent 700 dollars ‘undoing the work of a Wikipedia troll’.

'I stand by what I said at Harrogate but he has twisted and lied and stretched the truth in a way that has stunned me.'

You could simply have answered my questions when asked.

'At one point he made a defamatory statement about me on Twitter and I tweeted back that he had crossed over into libel. He then began tweeting that I was suing him.'

You tweeted at me ‘You have crossed the line into libel. Thanks.’ I took this as an indication that you were perversely pleased that I had said something untrue and damaging enough that you could then sue me. It’s a clear enough implication to anyone, I think. You also recently tweeted that you were looking for a lawyer in Sweden (where I live) who specializes in cyber-bullying - your clear implication being that I am cyber-bullying you. Good luck with either of those ideas.

'If nothing else he has so little in the way of assets that a libel action would be pyrrhic at best.'

What a cheap shot. And you have no idea what my assets are. You aren’t suing me because what I am saying is true. You'd be better served coming clean and explaining this to your readers, and of course to your publishers, who I hope would like an explanation for it. But mainly to your readers, who you habitually deceive by pretending to be other people. By your own admission.

'Since then I have just ignored him.'

Not quite true. You tweeted that I was ‘mad, ugly, losing his hair’ and called me ‘the shallow end of the gene pool’. You’ve made several other digs at me indirectly, I think. But yes, you’ve ignored my questions about your behaviour. Sure. There, we agree. However, a writer you know, Jake Drake, who has acted as an editor on at least one of your short stories and uploaded it to Smashwords, publicly accused me and Steve Mosby of smearing your reputation with fake reviews on Smashwords. Completely untrue. I wonder where Mr Drake could have got such a bizarre idea from.

'He then tweeted that he was afraid that I would send someone from Ireland to hurt him. That is a total fiction. But both these lies have been repeated as if they were fact.'

But I was afraid of that. I had read an interview with you in which you boasted about knowing 'half a dozen IRA guys' and 'some big-time drug smugglers', and coupled with your habit of abusing people online with virulently racist abuse and sick jokes, and several other things I’ve read and heard about you from Steve Roach, who warned me not to mess with you as you are 'powerful', and from several former colleagues of yours, such as the nature of that 'minor transgression' you committed as a young man, I was genuinely spooked by the thought you might send a racist hoodlum to have a go at me. I’m still a little spooked at that thought, in fact. As I type this, my account has been suspended from Twitter, apparently because I have been hacked. It could all be coincidence, but again, you were following my tweets and I was accusing you of lots of things. You could have answered. You chose not to, I think, because Twitter makes it very hard to answer direct questions. On a blog you can finesse your answers a lot, as you are doing.

'What I said at Harrogate was then twisted to say that I had opened fake Amazon accounts to criticise the work of other writers. That has been repeated many times and is not true.'

I haven’t said that, though frankly I do wonder what triggered the one-star review I just got from a ‘Mike’ on Amazon, especially as the last book he reviewed was one of yours, which he gave five stars.

Duns phoned a friend of mine and spent almost an hour getting him to try to criticise me. He taped the call but still ended up twisting what was said. I have a full four-page statement from that friend about the way Duns behaved. I also have a letter from him saying that in no way does he regard me as having bullied him.'

That may be, because Steve Roach, that 'friend' of yours, was very anxious not to upset you in any way. I’m hardly surprised, seeing as you spent over a year bullying him online. He sees it differently now, and is indeed even on friendly terms with you and grateful to you for help you have given him since your vendetta ended, but he didn’t see it like that at the time at all. He said to me that a year ago he had felt just as I did now, furious and wanting to see you account for your actions. He told me he had found himself attacked in all sorts of forums, had all his books slammed by you on Goodreads, that you named a sleazy villain after him in one of your books, and finally he discovered you had set up a Twitter account in his name to promote your own books, at which point he caved. Before that, he told me on tape at great length, he felt angry, upset and totally powerless: he complained about your behaviour to Goodreads and Amazon, and got nowhere.

UPDATE. Steve Roach now accepts that Stephen Leather did bully him, and in fact continued to do so even after I made this public. See this posting by Leather on his then-public Facebook wall, in which he published an email from Roach and mocked him:

'Over the past three weeks Duns has posted hundreds of malicious and abusive tweets about me.'

I haven't posted hundreds of tweets about you, and I don’t think any have been abusive. You’ve posted plenty of personally abusive tweets about me and others, often in the precise tones of a playground bully. Your mocking my lack of assets and sales figures in this response of yours is also for no other purpose than malice.

'He has appealed to his friends to join in and several have.'

Sigh. I haven’t appealed to anyone to be malicious or abusive against you, on Twitter or anywhere else. As above, you have in fact been provably malicious and abusive towards me: I've screengrabbed every one, incidentally. 

I have tried to get this story wider coverage, because you’re a bestselling author and I want you to be held to account for your fraudulent and often very disturbing behaviour.

'Duns took screenshots of my Facebook page and tweeted them.'

I tweeted one screenshot of a statement you made publicly on your Facebook wall – it was public when you made it, which is how I could screengrab it. I'm not going to apologize for doing that. You were boasting about paying 700 dollars ‘undoing the work of a Wikipedia troll’! Wikipedia is not a paying encyclopedia, and the way it works is by voluntary contributors who try to gather the most accurate information; there is a policy for getting rid of vandalism and trolls, and it doesn't involve payment. You’re a bestselling author (as you so often remind people) so I think you have an even greater  responsibility to act ethically because your fans, some of whom are also writers, may try to emulate you. So instead of getting upset that I posted this incriminating evidence about your unethical behaviour, it might be a better idea if you explained it. Who did you pay 700 dollars to at Wikipedia, and to do what, precisely? Why didn't you go through its procedures, which are free? Why do you think this is acceptable at all? I don’t think I need to justify exposing this statement of yours in the public domain: I think you need to address why you did this.  

'He tweeted personal details of my address.'

This information was and is in the public domain, Mr Leather. I found it on this website listing it as a registered address for you as a company director in 2010. I was looking for it because the same address was mentioned in this racist message from an abusive Yahoo forum poster who had posted under the names 'Big Nick Palmer', ‘stephenleather’ and 'Joe King' a year previously, in 2009. Although it is in the public domain, your address is not all that easy to find, so the fact that ‘stephenleather’ knew your address a year before you used it to register for a company is a piece of evidence that you and the virulent and abusive racist ‘Big Nick Palmer'/‘stephenleather’/'Joe King' are the same person. Added to this, Big Nick Palmer'/‘stephenleather’/'Joe King' shares several views you have expressed on your blog and in a 2010 novel, is white, British, your age, posted to a writer’s blog about Amazon’s Kindle forums, which you frequent, and yet never mentioned he was a well-known writer and had still not revealed that fact three years later there or anywhere else. All of this suggests either a series of coincidences running into odds of billions to one, an extraordinarily elaborate smear campaign against you three years ago that never resulted in any connection being made to you by anyone or, of course, that it is you. I'm sure that Yahoo would be able to confirm whether or not the poster in question has an IP registered anywhere near your homes in the UK or Thailand, but it would be far easier if you simply answered my question: did you make racist posts as 'Big Nick Palmer' aka 'stephenleather' aka 'Joe King' on Yahoo’s message boards? Yes or no? Try not to skirt it. It’s important.

'He has made countless unsubstantiated allegations and offensive comments to the point that I have to avoid Twitter most of the time, a great pity as that was my favoured way of talking to fans.'

You mainly use it to talk to yourself, in fact, as by my count you now have very few genuine followers, perhaps as low as a few dozen. Between March 1 2012 and March 11 2012 your Twitter account – the one under your own name, not your sockpuppets under the names of writers who have irritated you and who you wish to put in their place – received an incredible 26,500 new followers. You received on average 2,650 new followers every day, for 10 days straight. Then that stopped, and your account continued as normal. Did you buy these followers? If not, how did you not even remark on the extraordinary number of new followers you were getting every single day, and who then suddenly stopped arriving in such numbers? Surely your much-vaunted social media expertise would have told you this was unlikely to be above board.

'Duns claims to be a journalist.'

No, I am one. I’ve been published by most of the British broadsheets, and my next book is investigative journalism crossed with history.

'He also claims to be a writer.'

No, I am a writer, and have worked as one full-time since 2008. I’m just at the start of my career, really. You can try to belittle me as much as you like, but I’m published by Simon & Schuster and Penguin, and my first three books are currently under development as a TV series at the BBC. Youve missed several other things here, but not everyone is as obsessed with sales as you are, and it’s not the only way of judging a writer’s worth. I’m not in the least envious of you. (I think you mean envious, not jealous, but I'm not jealous of you, either.) And, of course, one of this is relevant to the issues under discussion.

'A writer by the name of Steve Mosby has been heaping abuse on me too, He is fond of calling me a bully (based mainly on the allegations that Duns has made).'

It’s plain as day you are one. You’ve just very pettily listed my and Steve’s book sale figures to try to cow us. You’ve made several abusive remarks to people on Twitter about this topic. You've called me mad, ugly and the shallow end of the gene pool, and have made similarly offensive digs at Steve.

'If anyone has been a bully it's Duns and Mosby.'

Really? You're a victim? Pull the other one, it's got a sock on it.

'Mosby alone has blogged on me FOUR times and has sent more than a hundred tweets slagging me off. Duns sends dozens of abusive tweets about me every day, including sme that are very personally offensive.'

Blogging about you isn't bullying. I haven’t sent you any abusive tweets. I have repeatedly tried to get you to answer my questions.

'But it is the posting of my personal details on Twitter that worries me most.'

You posted your address online yourself, as part of an abusive racist diatribe, Mr Leather. This information is also in the public domain.

'I would be grateful in future if you and the visitors to your blog would refrain from commenting on untrue and unsubstantiated allegations.'

They’re true, and I’ve substantiated them. You need to answer to them.