Rosemary and Rue
The world of Faerie never disappeared: it merely went into hiding, continuing to exist parallel to our own. Secrecy is the key to Faerie's survival — but no secret can be kept forever, and when the fae and mortal worlds collide, changelings are born.
Half-human, half-fae, outsiders from birth, these second-class children of Faerie spend their lives fighting for the respect of their immortal relations. Or, in the case of October "Toby" Daye, rejecting it completely. After getting burned by both sides of her heritage, Toby has denied the fae world, retreating into a "normal" life. Unfortunately for her, Faerie has other ideas.
The murder of Countess Evening Winterrose, one of the secret regents of the San Francisco Bay Area, pulls Toby back into the fae world. Unable to resist Evening's dying curse, which binds her to investigate, Toby is forced to resume her old position as knight errant to the Duke of Shadowed Hills and begin renewing old alliances that may prove her only hope of solving the mystery... before the curse catches up with her.
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Seanan McGuire
Seanan McGuire is a name that resonates with readers of urban fantasy, horror, and science fiction, known for her deep explorations into the dark and strange corners of the world. But while many recognize her for her October Daye and InCryptid series, Seanan’s literary prowess extends far beyond her most famous works. Under the name Mira Grant, she delves into gripping dystopias and terrifyingly believable horror with a touch of speculative brilliance. As A. Deborah Baker, she ventures into the whimsical and profound, creating rich, layered worlds that ask the reader to think deeply while being swept away in adventure.
October Daye
The October Daye series by Seanan McGuire invites readers into a world where the line between the mortal and the fae is not just blurred—it’s perilously thin. Following the life of October "Toby" Daye, a changeling private investigator with a dark past and an even darker future, this series pulls you into a labyrinth of ancient magic, dangerous politics, and mythical creatures. Toby is a half-human, half-fae detective who finds herself entangled in both the mundane and the supernatural, tasked with solving mysteries that threaten both worlds.
October Daye consists of nineteen primary books, and includes one additional book that complement the series but is not considered mandatory reads and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.

