S18, E16: Catherine faces audits for several of her foundation hospitals; Addison returns to Grey Sloan; tensions rise between Meredith and Richard; Owen goes back to work.

Starring Debbie Allen,  Kate Walsh,  Skylar Astin 

S18, E16: Catherine faces audits for several of her foundation hospitals; Addison returns to Grey Sloan; tensions rise between Meredith and Richard; Owen goes back to work.