Question: What American fantasy writer's wife uthored several best-selling epic fantasy novel series, including "The Belgariad" , "The Malloreon" , "The Elenium" , "The Tamuli" , and "The Dreamers", David Eddings, or  John Crowley?
Sentence (from "The Dreamers (novel series)"): The creatures also share an Overmind, through which each of them knows and sees what the others do.
Relevant evidence: No