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.

Dr. David Morgenstern (WILLIAM H. MACY) takes a trip down memory lane as he stops by County General and Sam's sister (SHANNON WOODWARD) pays an unexpected visit.

After a sinkhole collapses under a school playground, Don and his team investigate a trail of illegal waste-disposal; Charlie's new boss (Kathy Najimy) orders him to spend less time helping the FBI and more time in their department at Cal Sci.

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