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Mysterious photos of the world’s most wanted killer, Dr. William Blaine.

Coded letters luring Persephone Smith to Spain.

A little girl who is not what she seems.

Criminal psychologist Persephone “Seph” Smith is back on the hunt for Dr. William Baine, a scientist who murdered half the world’s population with his Type O virus. Now, he plans to rebuild the world in his own image—starting with Seph. When the hunter becomes the hunted, Seph must rely on her genetic gift to outwit Baine—and his shadowy accomplice.

Author J. L. Delozier spent a few minutes with The Big Thrill discussing the third installment of the Persephone Smith series, BLOOD TYPE X:

Was there anything new you discovered, or surprised you, as you wrote this book?

Much of the book is set in France and Northern Spain, specifically in the Basque Autonomous Community. I learned a lot about Basque culture – food, dress, etc. – while researching this book. The coolest thing I learned, though, is that Saint Roque is the patron saint of dogs – and plagues (very pertinent to this book!)

What attracts you to this book’s genre?

I love stories that get my own heart pounding, and if I can bleed *ahem* a little science and medicine into the mix, all the better.

What’s the one question you wish someone would ask you about this book, or your work in general?

Can you REALLY change someone’s blood type?

The answer is: yes. It ain’t easy, pilgrim, but it can be done.


J.L. Delozier has practiced rural and disaster medicine for 25 years. For inspiration, she turns to science that exists on the edge of reality—bizarre medical anomalies, new genetic discoveries, and anything that seems too weird to be true. She’s published three thrillers, the first of which was nominated for a “Best First Novel” award by the International Thriller Writers organization. Her short fiction has appeared in the British crime anthology, Noirville: Tales from the Dark Side and in NoirCon’s official journal, Retreats from Oblivion. She lives in Pennsylvania with her husband and three rescue cats.

To learn more about J.L. Delozier and her work, please visit her website.