This week on Up all Night, Ava runs a charity race against her rival Shayna while Chris suspects Luke has feeling for Reagan. Read about the celeb packed episode featuring Fred Armisen, Will Forte and Megan Mullally in our review.
A lion gets loose in the city, Callie deals with Arizona's past, Mark makes a decision about Julia and the news of Owen's affair starts to make its rounds. Who is the other woman? Check out our latest Grey's Anatomy Review now to find out!