I guess it wasn't a spoiler, anyway.
Sam has figured out who his unusual houseguest is, but they are having a great time laughing and talking. Adam beams when Sam praises his increasing vocabulary--until he starts having pains in his wrists.
Meanwhile, Trask is taking his revenge. Although he never knew Barnabas was a vampire, he doesn't seem to wonder how the same Barnabas is still around in 1968. Evidently he has no idea what year it is and probably doesn't care: His hatred of Barnabas is eternal.
I have to say that the trial is pretty silly. JC dons Nathan's US Navy uniform one more time. Barn's earliest victims parade by in silence. Even the judge, someone named Ezra Simpson, supposedly a traitor of the deepest dye, is just a walk-on. But I suppose that after all, it's really Trask's show.
Finally, Julia returns to the Old House, hears Trask's ghostly laughter and goes downstairs. She sees that Trask's alcove is bricked up again--but will she realize what it means before it's too late?