A disappointment.
The three best stories were ones I had already read: the two Fritz Leiber stories, which were as much satire as horror, and the St. Clair, which has been reprinted many times.
"Horn o'Plenty" was a fun read, but I'd consider it fantasy not horror. "Hand of St. Ury" had a good energy as well. The Evangeline Walton story was of interest for its Greek Civil War background.
The rest of the stories were of the "Gee, I guess I saw a ghost" variety. Indeed, one story was a variant of "the vanishing hitchhiker" that even though I had never read it before could predict.
There are better horror anthologies out there.