Episode Description: Beware, spoilers! To read - hover over the text.
During the trial in a sensational case of murder of one of the jurors drops dead, poisoned by cyanide. The suspect is a cousin of the suspect: he allegedly slipped cyanide into the coffee of the deceased. However, it is later revealed that cyanide was in one of the capsules, which morning received a juror. Castle and Beckett begin to follow the trail that led the deceased into the courtroom.