Was there an assassin on Grant's train?

[Pamela]

Laurie, who is Gus Powell? My point is that no convicted conspirator named Weichmann and who would know better than they or have more motivation since his testimony helped convict them. You called Weichmann a squealer. Would you think better of Weichmann if he lied to authorities seeking justice for Lincoln and Seward and others who were attacked? We know now that Mary, John and Booth tried to compromise him. Mary stole the Father Menu letter and gave it to Booth. Booth sent a telegram to Weichmann intended for John. John took Weichmann with him to the Herndon house when he confirmed arrangements for Powell. John, Mudd and Booth tried to compromise Weichmann with their December or January meeting. What would you have Weichmann do?