What does Mr. Lawrence reveal in court that surprises the judge?

In the context of the court scene, Mr. Lawrence's revelation of knowledge regarding the events that occurred that night is pivotal. This information catches the judge off guard because it may not have been previously disclosed or expected from Mr. Lawrence, who is generally not seen as a key player in the events surrounding the main characters. His insight into those events could significantly impact the court's understanding of the case and Denny's situation, lending credibility to Denny’s side and potentially altering the trajectory of the trial. This moment emphasizes the theme of unexpected support in critical times, highlighting how insights can shift perceptions and outcomes in challenging circumstances.