The Lawnmower Man - Stephen King

Still, he was ready to run — would run in a second or two, when his mental switchboard had dealt with the shock those two shiny yellow eyes had given him. He felt the rough surface of the macadam under his fingers, and the thin sheet of cold water flowing around them. He saw himself getting up and backing away, and that was when a voice — a perfectly reasonable and rather pleasant voice — spoke to him from inside the stormdrain. There was a clown in the stormdrain.