On Grey's Anatomy Season 10, Episode 20: "Go It Alone," Cristina (Sandra Oh) will find out if the Harper Avery is actually hers, April (Sarah Drew) and Jackson (Jesse Williams) will discover a major point of contention in their relationship, and much more.

What else can we expect from tomorrow's episode? We've gathered all of the most interesting info about it right here.
 

The Official Synopsis

Let's start with the official synopsis of the episode:

Cristina [Sandra Oh] enlists Meredith [Ellen Pompeo] to help her prepare an acceptance speech for her possible Harper Avery win, and while Owen offers to attend the ceremony with her, she insists on going alone. Meanwhile, Derek [Patrick Dempsey] feels overwhelmed between his responsibilities at home and at the hospital. April [Sarah Drew] and Jackson [Jesse Williams] come to a disagreement on children and religion, and Callie [Sara Ramirez] and Arizona [Jessica Capshaw] try to reconnect in their marriage.

There's a lot going on in this synopsis. Fortunately, the sneak peeks and promo photos can help us flesh out some of the details.
 

Callie and Arizona Do More Than "Reconnect"

"Reconnect" is an understatement for what Callie and Arizona are doing — which is actually deciding who is going to bear their second child by flipping a coin. Talk about making a major life choice! This marriage seems back to a strong place; we just hope this fateful coin flip doesn't add more stress to their connection.

April and Jackson's Fight

Callie and Arizona are finally back in a good place, but April and Jackson are quickly learning that they still have a lot of issues to work out in their impromptu marriage. Like, for instance, the fact that they have wildly different views on religion, as we can see in this sneak peek.

We love these crazy kids together, but this is exactly the kind of thing you're supposed to consider before you tie the knot. Just sayin'.
 

Do Meredith and Derek Fight?

The official synopsis says that Derek is feeling the strain of his responsibilities, and in the promo photos it looks like he and Mer have a bit of a tiff. Is he slacking at home? We're getting kind of tired of those arguments. 

Are you looking forward to this episode? Let us know in the comments below!

Catch this episode tomorrow, Thursday, April 17 at 9 p.m. ET on ABC.