More like The Silent Invaders

anchored on:science fictionalienstensefirst contactidentitymysterious

but

Narrow

Stranger in a Strange LandNovel
Robert A. Heinleinstandalone novel1961
About faith and religion and psychic powers, set in north america and near future.
Childhood's EndNovel
Arthur C. Clarkestandalone novel1953
Bittersweet in tone, about technological singularity, set in our world and near future.
The Winds of AltairNovel
Ben Bovastandalone novel1973
About space colonization, set in other star systems and near future.
“Even before the human scientists arrived at the sixth planet of Altair they knew they had their work cut out for them.”
from the catalogue
The VisitorsNovel
Clifford D. Simakstandalone novel1980
About survival, set in our world and contemporary.
“WorldCat: Intelligent, alien creatures arrive on Earth from outer space, threatening world stability and presaging the destruction of civilization.”
from the catalogue
EmbassytownNovel
China Miévillestandalone novel2011
About space colonization and political intrigue, set in other star systems and far future.
“In the far future, humans have colonized a distant planet, home to the enigmatic Ariekei, sentient beings famed for a language unique in the universe, one that only a few altered human ambassadors can speak.”
from the catalogue
FootfallNovel
Larry Niven & Jerry Pournellestandalone novel1985
Alien invasion, about survival, set in our world and contemporary.
“When aliens travel to Earth from Alpha Centauri, differences between alien and human psychology result in an unprovoked invasion, and the resulting resistance results in the aliens' use of a devastating weapon.”
from the catalogue