CASSVILLE, Mo. (AP) — John Forsyth was known as a hard-working doctor who cared deeply for his patients and often teased nurses in the emergency room to ease tension. He was a father of eight and newly engaged. He also co-founded a cryptocurrency business with his brother.

His sudden disappearance from a southwestern Missouri town last month — and the eventual in an Arkansas lake — has led those who knew him to wonder what happened to the man who seemed happier than he’d been for some time. A lack of information from law enforcement has only deepened the mystery, prompting amateur sleuths to espouse theories on Facebook.

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