Greenfield's writing has been compared to Welsh, Larsson and Bouroughs and it certainly lies in that area or literature.
An early Amazon review states: 'Slow Poison is beautifully written and has a darkness, a violence, that creeps up on you and comes as a total surprise. I can honestly say that I haven't read anything like this before, it's certainly unique, and I enjoyed it. This is a story of how slow, creeping revenge can reach out from the past and effect what's happening right now, and not in a good way. There's a shocking case of mistaken identity which leaves a killer at large but; there's also a diary with a world of darkness at it's heart. There are multiple layers of planning and plotting as you travel from one era to the next, one location to the next, but it's handled well and you don't feel lost. Strange, quirky, took me a while to get into the style of writing but certainly worth downloading because it's so different.'
Another reads: 'This is a good play on mistaken identity - the imprisonment of a youth for a shocking murder in Amsterdam when, it eventually transpires, the real murderer is another person who has an agenda of death to meet on others in vengeance for the mayhem he once experienced on a seedy Gloucestershire estate.
I was first attracted to this book because of the contrast between the beautiful Cotswolds, which I know quite well, and the brutality which, I had thought, irreconcilable with such a place.
Perhaps more interesting though, is that the killer is incited to commit his trail of murders by coming under the influence of a diary written about the WWII death camps and I do sometimes wonder whether, even today, society somewhere, in some country, might still be so fragile as to have failed to recognise when evil can creep back again.
The story has pace and though it didn't have for me the love of the language that I like to find in an author, it stimulated thought and awakened me from some of my too comfortable preconceptions.'
Slow Poison can be found on Amazon worldwide or by following this link;