When Sir Walter Conrad discovers a new energy source, one that could topple nations and revolutionize society, the race to dominate its ownership begins. But the excavation and use of this energy source will have dire consequences for both humans and fey. For an ancient enemy stirs, awakened by Sir Walter’s discovery.

Half-fey Effie of Glen Coe finds herself embroiled in the conflict, investigating the eldritch evil spreading throughout the Highlands. As she struggles against the greed of mighty lords and to escape the clutches of the queen’s minions, she realizes the only thing that can save them all is a truce no one wants.

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Well-developed characters and plot make this historical fantasy a true pleasure to read and become lost in… A very unique and fascinating story. I definitely can’t wait for this series to continue!
     – Cecily Wolfe, author of Throne of Grace


Effie of Glen Coe has become a living legend, the half-fey woman who saved Scotland from devastation. But with heinous cults and unruly mobs all around, Effie must become something more than herself lest everything fall into ruin.

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Comer weaves a riveting tale of intrigue, magic, and romance in a steampunk-flavored Scotland packed with evil creatures, scheming politicians, and vicious bigots. But the real highlight of OAK SEER is its heroine. Effie of Glen Coe is one feisty freedom fighter!
     – Wendy N. Wagner, Hugo Award Winner & author of An Oath of Dogs

A fantastic sequel, OAK SEER plunges you willingly into the fey underworld of Victorian Scotland.
     – Garrett Calcaterra, author of Dreamwielder


With a treaty to bring peace to the Scottish fey hanging in the balance, Effie of Glen Coe must finally claim her place as the heart of the Seily Court, if she is to defeat the dark madness of the Barrow Witch.

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In BARROW WITCH, the stakes are steeper, the danger more dreadful, and Effie is more exciting than ever. Comer concludes his trilogy with flourishing aplomb… It’s quite the accomplishment for each book in a series to improve, but with BARROW WITCH we reach the ultimate high of fey steampunk fantasy that the series has always delivered.
     – Ahimsa Kerp, author of Empire of the Undead