WHO KILLED DALE JEAN LETH LANGSTON, CHRISTINE JEFFS & TROY LANGSTON?

We begin this article with a flashback regarding the Marilyn Reese Sheppard murder of 1954. Her husband Sam Sheppard had ended up in jail and had received an anonymous letter with a plea to shut up (ie not to betray his colleagues / Freemason brothers), so the killer would turn himself in and give him