Warning: This story contains major spoilers from Thursdays episode of Greys Anatomy.
Read at your own risk!
Come Monday, someones going to have a really tough first day of work.

Credit: Mitchell Haaseth/ABC
That is, until she learns that Penny is transferring to Grey Sloan as a new resident.
How will the rest of Grey Sloan react?
And does this spell the end for Callie and Penny?
Everybody knows how devastated Meredith has been after leaving for a whole year.
Everybody embraced her, and now theyre going to look at [Penny] a little differently.
Some people will be sympathetic, some people just cant stand to look at her.
Its going to be tough.
Will Penny find any allies at Grey Sloan?
I would say anybody can find allies, its just going to take a matter of time.
Were in episode 9, and its its own animal right now.
We cant be sure where anything is going to go.
How is Meredith dealing with Penny being around at the hospital?
Its a constant reminder.
How can she see her without thinking about Derek?
This is a journey for Meredith of personal growth.
Is she going to rise, or stay in that dark place?
Thats what were going to play out.
Will Penny ever be able to actually explain that she tried to do the right thing with Derek?
She explained it to Meredith when she was at the hospital.
I dont think Penny wants to talk about this at all.
How can you explain it?
Whatever you say, its not going to bring him back.
Theres Meredith, a widow with three children.
How do you fix that?
Penny is coming to Grey Sloan because she wants to be a better doctor.
Is Callie torn between Penny as her new girlfriend and Meredith as one of her best friends?
Yeah, thats really tough.
The audience is going to be riveted.
I think our viewership is going to triple.
[Laughs] Its so amazing whats going on.
Our stories are so based on such real life situations that are not improbable at all.
Theyre very universal stories.
What happens to a family when a wrecking ball comes in?
How does everybody react?
Not everyone has the same reaction.
Will people be upset with Callie because of who shes dating?
Amelias already very upset.
Amelia is out of her mind about it.
That was her brother, its very real for her.
She had so many personal life crises.
She was in a good mood at the party, she was happy.
Its a wrecking ball.
She was so upset.
The gloves have come off.
Theres no sugarcoating any goddamn thing.
Even sisters who have grown up together and love each other could fall out over something like this.
It can do a lot of things.
Greys Anatomyairs Thursdays at 8 p.m.