📰 Review: Dark, BDSM, polyamorous mafia romance that takes the 4 MCs on a journey to love ❤️ Rating: 4/5 🔥 Spice: 3/5 🚩 Check TWs SIN AND SAPPHIRE by Poppy Jacobson has lots of action and a mix of BDSM - with one guy being a sadist and another a pleasure dom. This was not my cup of tea but the book itself was well written, so I gave it four stars because it very much what some readers enjoy.