The Peacock Feather Murders

The Peacock Feather Murders aka The Ten Teacups by Carter Dickson

Mr Vance Keating a prodigal adventurer is on the lookout for his next kick, and it comes in the form of a secret society called the "Ten Teacups". Keating receives a note inviting him to the meeting of the teacups. Chief Inspector Masters also gets a note telling him about the meeting of the Ten Teacups. This makes Masters very nervous, why? because the last time there was a meeting of the ten teacups someone had been murdered under enigmatic circumstances.