October "Toby" Daye, changeling knight in the service of Duke Sylvester Torquill, finds the delicate balance of her life shattered when she learns that an old friend is in dire trouble. Lily, Lady of the Tea Gardens, has been struck down by a mysterious, seemingly impossible illness, leaving her fiefdom undefended.

Struggling to find a way to save Lily and her subjects, Toby must confront her own past as an enemy she thought was gone forever raises her head once more: Oleander de Merelands, one of the two people responsible for her fourteen-year exile.

Time is growing short and the stakes are getting higher, for the Queen of the Mists has her own agenda. With everything on the line, Toby will have to take the ultimate risk to save herself and the people she loves most—because if she can't find the missing pieces of the puzzle in time, Toby will be forced to make the one choice she never thought she'd have to face again...

October "Toby" Daye is a changeling, the daughter of Amandine of the fae and a mortal man. Like her mother, she is gifted in blood magic, able to read what has happened to a person through a mere taste of blood. Toby is the only changeling who has earned knighthood, and she re-earns that position every day, undertaking assignments for her liege, Sylvester, the Duke of the Shadowed Hills.

Now Sylvester has asked her to go to the County of Tamed Lightning—otherwise known as Fremont, CA—to make sure that all is well with his niece, Countess January O'Leary, whom he has not been able to contact. It seems like a simple enough assignment—but when dealing with the realm of Faerie nothing is ever as simple as it seems. Toby soon discovers that someone has begun murdering people close to January, whose domain is a buffer between Sylvester's realm and a scheming rival duchy. If Toby can't find the killer soon, she may well become the next victim.