Christine Avila

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.

Gaines' boss finally loses patience with Gaines' ineffective pursuit of Jack, as Jack turns the tables. Meanwhile, Nina and Tony learn the plot to assassinate Senator Palmer goes deeper than they thought and Senator Palmer gets surprising news from Maureen Kingsley.

Holly pushes Saul and Sarah to their limits; Kevin encounters prejudice in the workplace for the first time; Justin struggles with a hero's welcome from a soldier he saved in Iraq.

A teen who painted graffiti in Little Italy is slain; Donna makes a decision about her relationship with Medavoy; Sylvia is mugged.

Jonathan and Mark attempt to help a misguided angel who has been trying to earn his wings for 200 years.

Domestic violence in Russell's family leads to a tragedy; Sipowicz and Medavoy probe an old missing-persons case that yields a murder victim.