Welcome to Nocturne Falls, the town that celebrates Halloween 365 days a year. Jayne Frost is a lot of things. Winter elf, Jack Frost's daughter, Santa Claus' niece, heir to the Winter Throne and now...private investigator. Sort of. When the Sandman comes to Santa’s Workshop, the shop Jayne manages, to do his first ever book signing, it’s a major event. He’s kind of a supernatural celebrity and she needs to keep him happy. All is well until trouble shows up at the party thrown in his honor. Trouble in the form of Luna Nyx, the Mistress of Nightmares and his creepy counterpart. The Sandman’s assistant says Luna is dangerous, and Jayne believes it when her dreams turn dark. Can Jayne keep the Sandman safe from this gothic goddess? Or will Luna’s threats put them both to sleep for good?