English
Cerulean Sins apparently takes place some time after the events of the previous novel, Narcissus in Chains. Anita is happily living with Micah and Nathaniel and dating Micah and Jean-Claude. However, as usual, Anita is confronted by a series of simultaneous problems.
First, she appears to be attracting the attention of a number of spies, including "Leo Harlan", a professional assassin who claims to want Anita to reanimate one of his ancestors to assist in genealogical research and two mercenaries who Anita arrests via her Federal Marshal status after noticing them following her.
Second, Jean-Claude is unpleasantly surprised by an early visit from Musette and her entourage, all of whom are representatives of the founder of Jean-Claude's bloodline, Belle Morte and represent an attempt by Belle Morte to test and possibly punish or capture Jean-Claude and his followers.
Third, Anita learns of a series of shockingly brutal rapes and murders, apparently committed by a shapeshifter serial killer. However, because of her deteriorating relationship with Dolph, Anita is unable to get cooperation from the police in solving the crimes.