More like Operation Afreet

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Darker Than You ThinkNovel
Jack Williamsonstandalone novel1948
Horror and fantasy, dark in tone, set in north america.
Operation ChaosSeries
series7 books1956
completed
Fantasy.
“Assembled from stories written across the 1950s and 60s, Operation Chaos was followed decades later by the direct sequel Operation Luna.”
from the catalogue
Start with Operation Chaos →
RoadmarksNovel
Roger Zelaznystandalone novel1979
Time travel and science fiction, about dragons.
AnimorphsUniverse
universe66 books1996
About aliens, set in contemporary.
“The Yeerks are grey slugs the length of your thumb.”
from the catalogue
Start with The Invasion →
includes Megamorphs, Alternamorphs, The Animorph Chronicles
The Book of PtathNovel
A. E. van Vogtstandalone novel1947
Science fiction, about gods and survival, set in far future.
“Ptath, a very powerful god, is throwing by his deadly rival, the goddess Ineznia, on Earth, around 200,000,000 AD, in the form of a mortal, where he has to face numerous dangers to survive.”
from the catalogue
The Valley of CreationNovel
Edmond Hamiltonstandalone novel1964
Adventure, about aliens, set in lost world.
“In that hidden valley, land of strangely forbidding beauty, Eric Nelson, soldier of fortune, faced a battle weirder and more savage than any he had ever fought.”
from the catalogue