Sammy tries to make amends after the murder of a young man who agreed to testify in one of his cases. John and Tang find themselves babysitting a documentary film crew. Lydia is ordered to put on her uniform and serve as shift supervisor for the day, but the job could be more than her body is able to handle.

Lydia and Ruben investigate the death of a young nanny, but first they have to find the kids who were in her care. Ben tries to intervene in the life of a prostitute with a daughter, but his efforts only make things worse. And while Tang gets an update about the boy she shot, John still wants her to come clean about what really happened.