Anguished Luster - The Caldera's Vice Trilogy, #2

Milton Romero, black demon, flees his disturbing past while building his future as a mob boss in Mayville's drug cartel. Asher Glassberg, young red demon, struggles between peaking into his deceased father's journey to enlightenment and his feelings for the man he loves. Meanwhile, Prohibition Agent Virginia Price is hot on the drug cartel's tail with the help of local detective Rand Riker, an enigmatic scoundrel with twisted motivations.
All comes to a boiling head when a mysterious cult reveals its cruel intentions. Sordid lust of all kinds thrive in the Art Deco Lovecratian city of Mayville, ready to ensnare all who enter.