Dave Taylor / Davey Herold Question

[KateH.]

Or he said he found no evidence that Atzerodt did anything.

Which is what Atzerodt had already told Booth to his face when he gave him the assignment.

So why was Atzerodt asking strange questions about Johnson to the bartender? And why was he arrested and executed for attempting to kill Johnson? Why was he still in town if Booth gave his job to someone else?