The Sisters Brothers [suggested by Phil Howarth]

Hermann Kermit Warm is going to die. Across 1000 miles of Oregon desert his assassins, the notorious Eli and Charlies Sisters, ride – fighting, shooting, and drinking their way to Sacramento. But their prey isn’t an easy mark, the road is long and bloody, and somewhere along the path Eli begins to question what he does for a living – and whom he does it for.
The Sisters Brothers pays homage to the classic Western, transforming it into an unforgettable ribald tour de force. Filled with a remarkable cast of losers, cheaters, and ne’er-do-wells from all stripes of life – and told by a complex and compelling narrator, it is a violent, lustful odyssey through the underworld of the 1850s frontier that beautifully captures the humor, melancholy, and grit of the Old West and two brothers bound by blood, violence, and love. [product description from Amazon]
The book has its own Wikipedia page.
Author’s Wikipedia page.
Shortlisted for this month
The book selector for the month can choose up to three books for nomination. This month Phil’s other choices were:
The Girl on the Train

Rachel catches the same commuter train every morning. She knows it will wait at the same signal each time, overlooking a row of back gardens. She’s even started to feel like she knows the people who live in one of the houses. ‘Jess and Jason’, she calls them. Their life — as she sees it — is perfect. If only Rachel could be that happy.
And then she sees something shocking. It’s only a minute until the train moves on, but it’s enough.
Now everything’s changed. Now Rachel has a chance to become a part of the lives she’s only watched from afar.
Now they’ll see; she’s much more than just the girl on the train… [product description from Amazon]
The book has its own Wikipedia page and has also been released this year as a film, which not only has its own Wikipedia page but also a dedicated website.
Author’s Wikipedia page.
Author’s website.
Snowdrops

Nick has a confession. When he worked as a high-flying British lawyer in Moscow, he was seduced by Masha, an enigmatic woman who led him through her city: the electric nightclubs and intimate dachas, the human kindnesses and state-wide corruption. Yet as Nick fell for Masha, he found that he fell away from himself; he knew that she was dangerous, but life in Russia was addictive, and it was too easy to bury secrets – and corpses – in the winter snows… [product description from Amazon]
The book has its own Wikipedia page.
Author’s Wikipedia page.
Author’s website.