Since "Sturgeon" was trending today, I'm going to go ahead and assume it was sc-fi great Theodore Sturgeon and recommend four of his greatest works.
More Than Human (1953): This International Fantasy Award winner built from three linked novellas explores loneliness, belonging and immortality through a group of psionically gifted social outcasts.
Some of Your Blood (1961): A psychological horror novel with vampiric underpinnings told in epistolary form through case files, letters, and psychiatric notes.
The Dreaming Jewels (1950): His first novel, also published as The Synthetic Man, is a cosmic "found family" tale about a boy who joins a traveling circus - with some surprising secrets. A fan favorite.
E Pluribus Unicorn (1953): A collection of short stories that cover sci-fi, horror, and dark fantasy.