Rick Hautala (Dead Voices/Little Brothers) 2 Vintage 89/90 Horror Paperbacks

Little Brothers
It has been five years since Kip Howard saw his mother killed horribly by a blur of "little brown things." Five years of nightmares and a terror of dark places. Five years of struggling to overcome what must have been just his imagination...
But the untigahumk, the Indian word for "little brothers," are no one's imagination. Hideous forest creatures who feed every five years on human flesh, the little brothers are about to emerge from underground once again.
Only this time, there will be no escape for the young boy who witnessed their last feast.

Dead Voices
A young girl killed on a desolate highway.
A mother agonized by unceasing guilt.
In the vivid light of day, in the nightmare depths of sleep, her daughter calls to her from the grave.
And soon she'll know if the voices she hears intend a warning only a loved one can sound.
Or seek a revenge beyond the limits of death itself.