Band Sinister — K.J. Charles

Sir Philip Rookwood is the disgrace of the county. He's a rake and an atheist, and the rumours about his hellfire club, the Murder, can only be spoken in whispers. (Orgies. It's orgies.)

Guy Frisby and his sister Amanda live in rural seclusion after a family scandal. But when Amanda breaks her leg in a riding accident, she's forced to recuperate at Rookwood Hall, where Sir Philip is hosting the Murder.
Guy rushes to protect her, but the Murder aren't what he expects. They're educated, fascinating people, and the notorious Sir Philip turns out to be charming, kind -- and dangerously attractive.

In this private space where anything goes, the longings Guy has stifled all his life are impossible to resist...and so is Philip. But all too soon the rural rumour mill threatens both Guy and Amanda. The innocent country gentleman has lost his heart to the bastard baronet -- but does he dare lose his reputation too?