- Narrator: Clay Allison was probably the most dangerous of all the killers who challenged Wyatt Earp's authority as Marshal of Dodge City in 1876. Modern doctors would have diagnosed Allison as an alcoholic psychopath, but to the men of the Western frontier, his character was baffling. Only a rough and ready psychologist like Wyatt Earp had any chance in personal conflict with Allison. And for Marshal Earp, there was the deadly risk of guessing wrong.