As an ARC reader, one of my go-to genres is dark romance, which features anything from werewolves and vampires to angels and demons. The Shadow Daddies, as I like to call them, are always morally grey or pitch black. This list has no room for the cinnamon roll type of MMC. Please note! Once you read this list and discover these series, there is no going back, so clutch those pearls and be prepared to dive into the worlds one can only dream of.