Christine Avila

A nanny working for close friends of the mayor goes missing. Captain Raydor joins Brenda in carrying out the investigation but conceals the primary motive behind her involvement.

Gates and Morris help an elderly man who was assaulted on the street; Brenner and Dubenko clash while treating a mother thought to have late-stage cancer.

The problem of toxic waste disposal becomes real to Don, Charlie and the team when several children are injured after a sinkhole collapses underneath a school playground.

When Cuddy's handyman, Alfredo, falls from her roof and develops strange symptoms, she joins the team to figure out what is wrong with him.

Holly takes her authority at Ojai Foods too far and pushes Saul and Sarah to their limits. Meanwhile, Kevin encounters homophobia in the work place for the first time.

Jack turns the tables on Gaines; Nina and Tony discover that the plot to assassinate the senator goes deeper than they realised; Sen. Palmer receives surprising news.