. >> the conspirators, louis payne, mary surrat and dr.d by a tribunal for their roles in the assassination of president lincoln. the conspirators were hanged. >> the nazi saboteur trial began july 8th, 1942. it took place behind closed doors inside the department of justice building in washington, d.c., a place very familiar to agent traynor. >> in the same classroom where we were trained as new agents. they were brought to the department of justice every day in armored vehicles with guns. >> the tribunal was made up of seven military officers that fdr personally selected. >> when roosevelt set up the tribunal, he set up a blue ribbon group of lawyers, both to prosecute and to defend the case. biddle was the lead prosecutor. >> attorney general biddle has a photograph identified by one of the fbi men who captured the saboteurs. >> at the trial i was, i guess, the first witness called. and the attorney for dash persisted in asking me who did i meet, where did i meet him, and is the man here that i met. so i said, yes, he is, he's right ove