The Blue Devil is a dashing, brooding spy set to catch a traitor who uses a finishing school for young ladies as a base of operations. But he’s having trouble keeping his mind on his mission, for one of the students reminds him too much of the mysterious Titania, a fairy queen who fled after they kissed at a glittering masquerade ball. Kathryn St. David is pretending to be a student at the school in order to recover her dear auntie’s lost diary, which contains a scandalous secret that could ruin them both. But she’s horrified to discover that her roommate is the ward of the notorious, darkly attractive Marquis of Blackshire—who seems to be keeping secrets of his own. Will he recognize her as the fairy queen and expose her as the lady who kissed him like a strumpet in the moonlight?