Blind Voices by Tom Reamy
This novel was first published in 1978, shortly after the sudden death of the author at age 42. It's his only novel, although his SF/Fantasy short stories had also gained him some attention.
Haverstock's Traveling Curiosus and Tent Show arrives in a small Depression-era town in Kansas. The people are amused at what seem to be extraordinary, supernatural beings, but because they are mixed in with obvious fakes, most people shrug the whole thing off as a trick. But the circus really does contain supernatural beings, who are enslaved by the villainous Haverstock. The book follows three local girls whose fascination with the circus leads to sexual awakening fraught with danger. Rose falls for one of the roustabouts, Francine for the monstrous Minotaur, and Evelyn for Angel, a mute albino boy with powers to control the elements. The story is thrilling and evocative, but it's the love story between Evelyn and Angel that I liked the best. It's sweet, tender, and heartbreaking. I have reread this book many times and it always holds up.