Almost the whole paranormal range puts in an appearance from vampires, werewolves, demons, reapers to angels and ghouls. The pace is super fast, a little too fast with dreams, or dreamlike trips to the underworld and telepathic exchanges occurring so I wasn't always sure exactly what was happening.
There's plenty of violence and lustful sex to satisfy most erotica fans . The main character is Sienna the daughter of death, and a cross between a vampire and a werewolf. She has multiple lovers to sate her need for violent/meaningless sex and a body guard (a handsome vampire called Kaden) to protect her from.... I wasn't actually completely sure what as he's employed before the 'big bad' turns up.
There was a kaleidoscopic feel to this story that wasn't really my thing, but it might work for other people.