Jack and Dan go off on their own, yet again, after they are assigned to help a forensic specialist with a burglary case. Weary of the specialist's superiority complex, the duo breaks free only to be tangled up in another case entirely. They must get help from an unlikely source to save Liz when she gets in trouble working a high-profile prostitution sting.

Jack’s uncle, Nate, a deceitful con man, witnesses an arson and goes to see Jack and Dan with information about the people behind it. With the Nate as the only witness, the investigation forces Jack to work alongside his uncle, a man he barely knows or trusts.