Third book of the Filthy Rich Vampire series
 
"Returning to the world of the vampire elite as Solstice falls, they must navigate new dangers, treacherous allies, and morally grey friendships. When information leads them to Venice, the couple finds themselves at odds. Following the clue isn’t just dangerous, it could be deadly. With the fate of her family on the line, Thea rushes to Venice, and Julian follows despite his haunted history with the city.The past might hold the key to their future, but to find out, Julian must face the monster he was once, and as forgotten magic stirs in Thea's blood, the search for answers leads to devastating consequences."