The Dark Country and 1987’s Red Dreams (both originally put out by specialty horror publisher Scream/Press several years prior, both with inimitable J.K. Potter covers).
Dark Forces (1980), reveals a sinister source for those poor souls working the graveyard shift in 7-11s and gas stations and diners. Poor souls indeed.
Whispers, and was a standout of realistic horror amidst the dark fantasy included in that landmark anthology. But more than a handful of the stories in this collection are like stylized little writer's exercises, with the use of second-person narration, vague hints at interpersonal trauma, and existential-y questions of life and facing death; this is why Red Dreams had less of an impact on me than Dark Country. Still, both books should be in the serious horror fan's collection.
(This post originally appeared in slightly altered form as part of "The Summer of Sleaze" on the Tor.com website)