Since no one knew about the mistrial everyone was in shock when the Judge announced it. Duffy was in great shock and looked at his lawyer for answers. Everyone in the crowd was surprised that this late in the trial this was happening.
The Judge finishes his statement and the court room exits. Duffy is still in shock and his lawyer is furious. Theo sitting 2 rows back from them is satisfied with how his plan turned out.
Bobby still gets to stay in America. The trial will continue in four months with Bobby to testify against Pete Duffy. Soon Duffy will earn the fate he deserves and Theo will be able to be a kid again.