My Journey on Lincoln's Assassination

[Gene C]

I believe that there is strong evidence that Lloyd and Weichmann lied repeatedly. Interestingly, both men later confided to a few people that they only said what they said because they were threatened with death. Weichmann, however, recovered from his bout of honesty and went on to write a book that repeated his false testimony.

Some of this is new to me.
Please, what is the strong evidence that Lloyd and Weichmann lied repeatedly.
Who were the few people they confided to about the threats of death?
What and where (it's a big book) is the false testimony Weichmann repeated in his book?

Thanks.