Eaters of the Dead

The year is A.D. 922. A refined Arab courtier, representative of the powerful Caliph of Bagdad, encounters a party of Viking warriors who are journeying to the barbaric North. He is appalled by their Viking customs — the wanton sexuality of their pale, angular women, their disregard for cleanliness . . . their cold-blooded human sacrifices.
But it is not until they reach the depths of the Northland that the courtier learns the horrifying and inescapable truth: He has been enlisted by these savage, inscrutable warriors to help combat a terror that plagues them — a monstrosity that emerges under cover of night to slaughter the Vikings and devour their flesh . . .
([source][1])


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Also contained in:

- [Congo / Sphere / Eaters of the
Dead][2]

[1]: http://www.michaelcrichton.com/eaters-of-the-dead/
[2]: https://openlibrary.org/works/OL14950504W/Congo_Sphere_Eaters_of_the_Dead